7405840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{7121}}^1$

素因数の和:7147

約数の個数: 40

約数和(自身を含む): 18545688

約数和(自身を除く): 11139848

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 7121, 14242, 28484, 35605, 56968, 71210, 92573, 113936, 142420, 185146, 284840, 370292, 462865, 569680, 740584, 925730, 1481168, 1851460, 3702920, 7405840]

約数ペア:

[(1, 7405840), (2, 3702920), (4, 1851460), (5, 1481168), (8, 925730), (10, 740584), (13, 569680), (16, 462865), (20, 370292), (26, 284840), (40, 185146), (52, 142420), (65, 113936), (80, 92573), (104, 71210), (130, 56968), (208, 35605), (260, 28484), (520, 14242), (1040, 7121)]