20673640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{479}}^1$

素因数の和:586

約数の個数: 64

約数和(自身を含む): 50803200

約数和(自身を除く): 30129560

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 83, 104, 130, 166, 260, 332, 415, 479, 520, 664, 830, 958, 1079, 1660, 1916, 2158, 2395, 3320, 3832, 4316, 4790, 5395, 6227, 8632, 9580, 10790, 12454, 19160, 21580, 24908, 31135, 39757, 43160, 49816, 62270, 79514, 124540, 159028, 198785, 249080, 318056, 397570, 516841, 795140, 1033682, 1590280, 2067364, 2584205, 4134728, 5168410, 10336820, 20673640]

約数ペア:

[(1, 20673640), (2, 10336820), (4, 5168410), (5, 4134728), (8, 2584205), (10, 2067364), (13, 1590280), (20, 1033682), (26, 795140), (40, 516841), (52, 397570), (65, 318056), (83, 249080), (104, 198785), (130, 159028), (166, 124540), (260, 79514), (332, 62270), (415, 49816), (479, 43160), (520, 39757), (664, 31135), (830, 24908), (958, 21580), (1079, 19160), (1660, 12454), (1916, 10790), (2158, 9580), (2395, 8632), (3320, 6227), (3832, 5395), (4316, 4790)]