131891240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{253637}}^1$

素因数の和:253661

約数の個数: 32

約数和(自身を含む): 319583880

約数和(自身を除く): 187692640

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 253637, 507274, 1014548, 1268185, 2029096, 2536370, 3297281, 5072740, 6594562, 10145480, 13189124, 16486405, 26378248, 32972810, 65945620, 131891240]

約数ペア:

[(1, 131891240), (2, 65945620), (4, 32972810), (5, 26378248), (8, 16486405), (10, 13189124), (13, 10145480), (20, 6594562), (26, 5072740), (40, 3297281), (52, 2536370), (65, 2029096), (104, 1268185), (130, 1014548), (260, 507274), (520, 253637)]