78978640

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{75941}}^1$

素因数の和:75967

約数の個数: 40

約数和(自身を含む): 197752968

約数和(自身を除く): 118774328

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 75941, 151882, 303764, 379705, 607528, 759410, 987233, 1215056, 1518820, 1974466, 3037640, 3948932, 4936165, 6075280, 7897864, 9872330, 15795728, 19744660, 39489320, 78978640]

約数ペア:

[(1, 78978640), (2, 39489320), (4, 19744660), (5, 15795728), (8, 9872330), (10, 7897864), (13, 6075280), (16, 4936165), (20, 3948932), (26, 3037640), (40, 1974466), (52, 1518820), (65, 1215056), (80, 987233), (104, 759410), (130, 607528), (208, 379705), (260, 303764), (520, 151882), (1040, 75941)]