20021060

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{47}}^1\times {\mathrm{59}}^1$

素因数の和:153

約数の個数: 72

約数和(自身を含む): 46085760

約数和(自身を除く): 26064700

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 47, 59, 76, 94, 95, 118, 188, 190, 235, 236, 295, 361, 380, 470, 590, 722, 893, 940, 1121, 1180, 1444, 1786, 1805, 2242, 2773, 3572, 3610, 4465, 4484, 5546, 5605, 7220, 8930, 11092, 11210, 13865, 16967, 17860, 21299, 22420, 27730, 33934, 42598, 52687, 55460, 67868, 84835, 85196, 105374, 106495, 169670, 210748, 212990, 263435, 339340, 425980, 526870, 1001053, 1053740, 2002106, 4004212, 5005265, 10010530, 20021060]

約数ペア:

[(1, 20021060), (2, 10010530), (4, 5005265), (5, 4004212), (10, 2002106), (19, 1053740), (20, 1001053), (38, 526870), (47, 425980), (59, 339340), (76, 263435), (94, 212990), (95, 210748), (118, 169670), (188, 106495), (190, 105374), (235, 85196), (236, 84835), (295, 67868), (361, 55460), (380, 52687), (470, 42598), (590, 33934), (722, 27730), (893, 22420), (940, 21299), (1121, 17860), (1180, 16967), (1444, 13865), (1786, 11210), (1805, 11092), (2242, 8930), (2773, 7220), (3572, 5605), (3610, 5546), (4465, 4484)]