20048080

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{521}}^1$

素因数の和:584

約数の個数: 80

約数和(自身を含む): 51652944

約数和(自身を除く): 31604864

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 37, 40, 52, 65, 74, 80, 104, 130, 148, 185, 208, 260, 296, 370, 481, 520, 521, 592, 740, 962, 1040, 1042, 1480, 1924, 2084, 2405, 2605, 2960, 3848, 4168, 4810, 5210, 6773, 7696, 8336, 9620, 10420, 13546, 19240, 19277, 20840, 27092, 33865, 38480, 38554, 41680, 54184, 67730, 77108, 96385, 108368, 135460, 154216, 192770, 250601, 270920, 308432, 385540, 501202, 541840, 771080, 1002404, 1253005, 1542160, 2004808, 2506010, 4009616, 5012020, 10024040, 20048080]

約数ペア:

[(1, 20048080), (2, 10024040), (4, 5012020), (5, 4009616), (8, 2506010), (10, 2004808), (13, 1542160), (16, 1253005), (20, 1002404), (26, 771080), (37, 541840), (40, 501202), (52, 385540), (65, 308432), (74, 270920), (80, 250601), (104, 192770), (130, 154216), (148, 135460), (185, 108368), (208, 96385), (260, 77108), (296, 67730), (370, 54184), (481, 41680), (520, 38554), (521, 38480), (592, 33865), (740, 27092), (962, 20840), (1040, 19277), (1042, 19240), (1480, 13546), (1924, 10420), (2084, 9620), (2405, 8336), (2605, 7696), (2960, 6773), (3848, 5210), (4168, 4810)]