21550724

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{487}}^1$

素因数の和:564

約数の個数: 48

約数和(自身を含む): 43615488

約数和(自身を除く): 22064764

約数列:

[1, 2, 4, 13, 23, 26, 37, 46, 52, 74, 92, 148, 299, 481, 487, 598, 851, 962, 974, 1196, 1702, 1924, 1948, 3404, 6331, 11063, 11201, 12662, 18019, 22126, 22402, 25324, 36038, 44252, 44804, 72076, 145613, 234247, 291226, 414437, 468494, 582452, 828874, 936988, 1657748, 5387681, 10775362, 21550724]

約数ペア:

[(1, 21550724), (2, 10775362), (4, 5387681), (13, 1657748), (23, 936988), (26, 828874), (37, 582452), (46, 468494), (52, 414437), (74, 291226), (92, 234247), (148, 145613), (299, 72076), (481, 44804), (487, 44252), (598, 36038), (851, 25324), (962, 22402), (974, 22126), (1196, 18019), (1702, 12662), (1924, 11201), (1948, 11063), (3404, 6331)]