20155720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{467}}^1$

素因数の和:574

約数の個数: 64

約数和(自身を含む): 49533120

約数和(自身を除く): 29377400

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 83, 104, 130, 166, 260, 332, 415, 467, 520, 664, 830, 934, 1079, 1660, 1868, 2158, 2335, 3320, 3736, 4316, 4670, 5395, 6071, 8632, 9340, 10790, 12142, 18680, 21580, 24284, 30355, 38761, 43160, 48568, 60710, 77522, 121420, 155044, 193805, 242840, 310088, 387610, 503893, 775220, 1007786, 1550440, 2015572, 2519465, 4031144, 5038930, 10077860, 20155720]

約数ペア:

[(1, 20155720), (2, 10077860), (4, 5038930), (5, 4031144), (8, 2519465), (10, 2015572), (13, 1550440), (20, 1007786), (26, 775220), (40, 503893), (52, 387610), (65, 310088), (83, 242840), (104, 193805), (130, 155044), (166, 121420), (260, 77522), (332, 60710), (415, 48568), (467, 43160), (520, 38761), (664, 30355), (830, 24284), (934, 21580), (1079, 18680), (1660, 12142), (1868, 10790), (2158, 9340), (2335, 8632), (3320, 6071), (3736, 5395), (4316, 4670)]