541840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{521}}^1$

素因数の和:547

約数の個数: 40

約数和(自身を含む): 1359288

約数和(自身を除く): 817448

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 521, 1040, 1042, 2084, 2605, 4168, 5210, 6773, 8336, 10420, 13546, 20840, 27092, 33865, 41680, 54184, 67730, 108368, 135460, 270920, 541840]

約数ペア:

[(1, 541840), (2, 270920), (4, 135460), (5, 108368), (8, 67730), (10, 54184), (13, 41680), (16, 33865), (20, 27092), (26, 20840), (40, 13546), (52, 10420), (65, 8336), (80, 6773), (104, 5210), (130, 4168), (208, 2605), (260, 2084), (520, 1042), (521, 1040)]