20782160

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1$

素因数の和:133

約数の個数: 160

約数和(自身を含む): 61067520

約数和(自身を除く): 40285360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 34, 35, 37, 40, 56, 59, 68, 70, 74, 80, 85, 112, 118, 119, 136, 140, 148, 170, 185, 236, 238, 259, 272, 280, 295, 296, 340, 370, 413, 472, 476, 518, 560, 590, 592, 595, 629, 680, 740, 826, 944, 952, 1003, 1036, 1180, 1190, 1258, 1295, 1360, 1480, 1652, 1904, 2006, 2065, 2072, 2183, 2360, 2380, 2516, 2590, 2960, 3145, 3304, 4012, 4130, 4144, 4366, 4403, 4720, 4760, 5015, 5032, 5180, 6290, 6608, 7021, 8024, 8260, 8732, 8806, 9520, 10030, 10064, 10360, 10915, 12580, 14042, 15281, 16048, 16520, 17464, 17612, 20060, 20720, 21830, 22015, 25160, 28084, 30562, 33040, 34928, 35105, 35224, 37111, 40120, 43660, 44030, 50320, 56168, 61124, 70210, 70448, 74222, 76405, 80240, 87320, 88060, 112336, 122248, 140420, 148444, 152810, 174640, 176120, 185555, 244496, 259777, 280840, 296888, 305620, 352240, 371110, 519554, 561680, 593776, 611240, 742220, 1039108, 1222480, 1298885, 1484440, 2078216, 2597770, 2968880, 4156432, 5195540, 10391080, 20782160]

約数ペア:

[(1, 20782160), (2, 10391080), (4, 5195540), (5, 4156432), (7, 2968880), (8, 2597770), (10, 2078216), (14, 1484440), (16, 1298885), (17, 1222480), (20, 1039108), (28, 742220), (34, 611240), (35, 593776), (37, 561680), (40, 519554), (56, 371110), (59, 352240), (68, 305620), (70, 296888), (74, 280840), (80, 259777), (85, 244496), (112, 185555), (118, 176120), (119, 174640), (136, 152810), (140, 148444), (148, 140420), (170, 122248), (185, 112336), (236, 88060), (238, 87320), (259, 80240), (272, 76405), (280, 74222), (295, 70448), (296, 70210), (340, 61124), (370, 56168), (413, 50320), (472, 44030), (476, 43660), (518, 40120), (560, 37111), (590, 35224), (592, 35105), (595, 34928), (629, 33040), (680, 30562), (740, 28084), (826, 25160), (944, 22015), (952, 21830), (1003, 20720), (1036, 20060), (1180, 17612), (1190, 17464), (1258, 16520), (1295, 16048), (1360, 15281), (1480, 14042), (1652, 12580), (1904, 10915), (2006, 10360), (2065, 10064), (2072, 10030), (2183, 9520), (2360, 8806), (2380, 8732), (2516, 8260), (2590, 8024), (2960, 7021), (3145, 6608), (3304, 6290), (4012, 5180), (4130, 5032), (4144, 5015), (4366, 4760), (4403, 4720)]