20419560

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1$

素因数の和:137

約数の個数: 256

約数和(自身を含む): 80985600

約数和(自身を除く): 60566040

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 37, 40, 42, 45, 54, 56, 60, 63, 70, 72, 73, 74, 84, 90, 105, 108, 111, 120, 126, 135, 140, 146, 148, 168, 180, 185, 189, 210, 216, 219, 222, 252, 259, 270, 280, 292, 296, 315, 333, 360, 365, 370, 378, 420, 438, 444, 504, 511, 518, 540, 555, 584, 630, 657, 666, 730, 740, 756, 777, 840, 876, 888, 945, 999, 1022, 1036, 1080, 1095, 1110, 1260, 1295, 1314, 1332, 1460, 1480, 1512, 1533, 1554, 1665, 1752, 1890, 1971, 1998, 2044, 2072, 2190, 2220, 2331, 2520, 2555, 2590, 2628, 2664, 2701, 2920, 3066, 3108, 3285, 3330, 3780, 3885, 3942, 3996, 4088, 4380, 4440, 4599, 4662, 4995, 5110, 5180, 5256, 5402, 6132, 6216, 6570, 6660, 6993, 7560, 7665, 7770, 7884, 7992, 8103, 8760, 9198, 9324, 9855, 9990, 10220, 10360, 10804, 11655, 12264, 13140, 13320, 13505, 13797, 13986, 15330, 15540, 15768, 16206, 18396, 18648, 18907, 19710, 19980, 20440, 21608, 22995, 23310, 24309, 26280, 27010, 27594, 27972, 30660, 31080, 32412, 34965, 36792, 37814, 39420, 39960, 40515, 45990, 46620, 48618, 54020, 55188, 55944, 56721, 61320, 64824, 68985, 69930, 72927, 75628, 78840, 81030, 91980, 93240, 94535, 97236, 108040, 110376, 113442, 121545, 137970, 139860, 145854, 151256, 162060, 170163, 183960, 189070, 194472, 226884, 243090, 275940, 279720, 283605, 291708, 324120, 340326, 364635, 378140, 453768, 486180, 510489, 551880, 567210, 583416, 680652, 729270, 756280, 850815, 972360, 1020978, 1134420, 1361304, 1458540, 1701630, 2041956, 2268840, 2552445, 2917080, 3403260, 4083912, 5104890, 6806520, 10209780, 20419560]

約数ペア:

[(1, 20419560), (2, 10209780), (3, 6806520), (4, 5104890), (5, 4083912), (6, 3403260), (7, 2917080), (8, 2552445), (9, 2268840), (10, 2041956), (12, 1701630), (14, 1458540), (15, 1361304), (18, 1134420), (20, 1020978), (21, 972360), (24, 850815), (27, 756280), (28, 729270), (30, 680652), (35, 583416), (36, 567210), (37, 551880), (40, 510489), (42, 486180), (45, 453768), (54, 378140), (56, 364635), (60, 340326), (63, 324120), (70, 291708), (72, 283605), (73, 279720), (74, 275940), (84, 243090), (90, 226884), (105, 194472), (108, 189070), (111, 183960), (120, 170163), (126, 162060), (135, 151256), (140, 145854), (146, 139860), (148, 137970), (168, 121545), (180, 113442), (185, 110376), (189, 108040), (210, 97236), (216, 94535), (219, 93240), (222, 91980), (252, 81030), (259, 78840), (270, 75628), (280, 72927), (292, 69930), (296, 68985), (315, 64824), (333, 61320), (360, 56721), (365, 55944), (370, 55188), (378, 54020), (420, 48618), (438, 46620), (444, 45990), (504, 40515), (511, 39960), (518, 39420), (540, 37814), (555, 36792), (584, 34965), (630, 32412), (657, 31080), (666, 30660), (730, 27972), (740, 27594), (756, 27010), (777, 26280), (840, 24309), (876, 23310), (888, 22995), (945, 21608), (999, 20440), (1022, 19980), (1036, 19710), (1080, 18907), (1095, 18648), (1110, 18396), (1260, 16206), (1295, 15768), (1314, 15540), (1332, 15330), (1460, 13986), (1480, 13797), (1512, 13505), (1533, 13320), (1554, 13140), (1665, 12264), (1752, 11655), (1890, 10804), (1971, 10360), (1998, 10220), (2044, 9990), (2072, 9855), (2190, 9324), (2220, 9198), (2331, 8760), (2520, 8103), (2555, 7992), (2590, 7884), (2628, 7770), (2664, 7665), (2701, 7560), (2920, 6993), (3066, 6660), (3108, 6570), (3285, 6216), (3330, 6132), (3780, 5402), (3885, 5256), (3942, 5180), (3996, 5110), (4088, 4995), (4380, 4662), (4440, 4599)]