19999440

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{197}}^1$

素因数の和:266

約数の個数: 160

約数和(自身を含む): 70709760

約数和(自身を除く): 50710320

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 47, 48, 54, 60, 72, 80, 90, 94, 108, 120, 135, 141, 144, 180, 188, 197, 216, 235, 240, 270, 282, 360, 376, 394, 423, 432, 470, 540, 564, 591, 705, 720, 752, 788, 846, 940, 985, 1080, 1128, 1182, 1269, 1410, 1576, 1692, 1773, 1880, 1970, 2115, 2160, 2256, 2364, 2538, 2820, 2955, 3152, 3384, 3546, 3760, 3940, 4230, 4728, 5076, 5319, 5640, 5910, 6345, 6768, 7092, 7880, 8460, 8865, 9259, 9456, 10152, 10638, 11280, 11820, 12690, 14184, 15760, 16920, 17730, 18518, 20304, 21276, 23640, 25380, 26595, 27777, 28368, 33840, 35460, 37036, 42552, 46295, 47280, 50760, 53190, 55554, 70920, 74072, 83331, 85104, 92590, 101520, 106380, 111108, 138885, 141840, 148144, 166662, 185180, 212760, 222216, 249993, 277770, 333324, 370360, 416655, 425520, 444432, 499986, 555540, 666648, 740720, 833310, 999972, 1111080, 1249965, 1333296, 1666620, 1999944, 2222160, 2499930, 3333240, 3999888, 4999860, 6666480, 9999720, 19999440]

約数ペア:

[(1, 19999440), (2, 9999720), (3, 6666480), (4, 4999860), (5, 3999888), (6, 3333240), (8, 2499930), (9, 2222160), (10, 1999944), (12, 1666620), (15, 1333296), (16, 1249965), (18, 1111080), (20, 999972), (24, 833310), (27, 740720), (30, 666648), (36, 555540), (40, 499986), (45, 444432), (47, 425520), (48, 416655), (54, 370360), (60, 333324), (72, 277770), (80, 249993), (90, 222216), (94, 212760), (108, 185180), (120, 166662), (135, 148144), (141, 141840), (144, 138885), (180, 111108), (188, 106380), (197, 101520), (216, 92590), (235, 85104), (240, 83331), (270, 74072), (282, 70920), (360, 55554), (376, 53190), (394, 50760), (423, 47280), (432, 46295), (470, 42552), (540, 37036), (564, 35460), (591, 33840), (705, 28368), (720, 27777), (752, 26595), (788, 25380), (846, 23640), (940, 21276), (985, 20304), (1080, 18518), (1128, 17730), (1182, 16920), (1269, 15760), (1410, 14184), (1576, 12690), (1692, 11820), (1773, 11280), (1880, 10638), (1970, 10152), (2115, 9456), (2160, 9259), (2256, 8865), (2364, 8460), (2538, 7880), (2820, 7092), (2955, 6768), (3152, 6345), (3384, 5910), (3546, 5640), (3760, 5319), (3940, 5076), (4230, 4728)]