18744568

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{541}}^1$

素因数の和:679

約数の個数: 32

約数和(自身を含む): 36292320

約数和(自身を除く): 17547752

約数列:

[1, 2, 4, 8, 61, 71, 122, 142, 244, 284, 488, 541, 568, 1082, 2164, 4328, 4331, 8662, 17324, 33001, 34648, 38411, 66002, 76822, 132004, 153644, 264008, 307288, 2343071, 4686142, 9372284, 18744568]

約数ペア:

[(1, 18744568), (2, 9372284), (4, 4686142), (8, 2343071), (61, 307288), (71, 264008), (122, 153644), (142, 132004), (244, 76822), (284, 66002), (488, 38411), (541, 34648), (568, 33001), (1082, 17324), (2164, 8662), (4328, 4331)]