20161900720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1140379}}^1$

素因数の和:1140422

約数の個数: 80

約数和(自身を含む): 53451891360

約数和(自身を除く): 33289990640

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 34, 40, 52, 65, 68, 80, 85, 104, 130, 136, 170, 208, 221, 260, 272, 340, 442, 520, 680, 884, 1040, 1105, 1360, 1768, 2210, 3536, 4420, 8840, 17680, 1140379, 2280758, 4561516, 5701895, 9123032, 11403790, 14824927, 18246064, 19386443, 22807580, 29649854, 38772886, 45615160, 59299708, 74124635, 77545772, 91230320, 96932215, 118599416, 148249270, 155091544, 193864430, 237198832, 252023759, 296498540, 310183088, 387728860, 504047518, 592997080, 775457720, 1008095036, 1185994160, 1260118795, 1550915440, 2016190072, 2520237590, 4032380144, 5040475180, 10080950360, 20161900720]

約数ペア:

[(1, 20161900720), (2, 10080950360), (4, 5040475180), (5, 4032380144), (8, 2520237590), (10, 2016190072), (13, 1550915440), (16, 1260118795), (17, 1185994160), (20, 1008095036), (26, 775457720), (34, 592997080), (40, 504047518), (52, 387728860), (65, 310183088), (68, 296498540), (80, 252023759), (85, 237198832), (104, 193864430), (130, 155091544), (136, 148249270), (170, 118599416), (208, 96932215), (221, 91230320), (260, 77545772), (272, 74124635), (340, 59299708), (442, 45615160), (520, 38772886), (680, 29649854), (884, 22807580), (1040, 19386443), (1105, 18246064), (1360, 14824927), (1768, 11403790), (2210, 9123032), (3536, 5701895), (4420, 4561516), (8840, 2280758), (17680, 1140379)]