18780320

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9029}}^1$

素因数の和:9057

約数の個数: 48

約数和(自身を含む): 47786760

約数和(自身を除く): 29006440

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 9029, 18058, 36116, 45145, 72232, 90290, 117377, 144464, 180580, 234754, 288928, 361160, 469508, 586885, 722320, 939016, 1173770, 1444640, 1878032, 2347540, 3756064, 4695080, 9390160, 18780320]

約数ペア:

[(1, 18780320), (2, 9390160), (4, 4695080), (5, 3756064), (8, 2347540), (10, 1878032), (13, 1444640), (16, 1173770), (20, 939016), (26, 722320), (32, 586885), (40, 469508), (52, 361160), (65, 288928), (80, 234754), (104, 180580), (130, 144464), (160, 117377), (208, 90290), (260, 72232), (416, 45145), (520, 36116), (1040, 18058), (2080, 9029)]