21511360

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{5171}}^1$

素因数の和:5201

約数の個数: 56

約数和(自身を含む): 55174896

約数和(自身を除く): 33663536

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 130, 160, 208, 260, 320, 416, 520, 832, 1040, 2080, 4160, 5171, 10342, 20684, 25855, 41368, 51710, 67223, 82736, 103420, 134446, 165472, 206840, 268892, 330944, 336115, 413680, 537784, 672230, 827360, 1075568, 1344460, 1654720, 2151136, 2688920, 4302272, 5377840, 10755680, 21511360]

約数ペア:

[(1, 21511360), (2, 10755680), (4, 5377840), (5, 4302272), (8, 2688920), (10, 2151136), (13, 1654720), (16, 1344460), (20, 1075568), (26, 827360), (32, 672230), (40, 537784), (52, 413680), (64, 336115), (65, 330944), (80, 268892), (104, 206840), (130, 165472), (160, 134446), (208, 103420), (260, 82736), (320, 67223), (416, 51710), (520, 41368), (832, 25855), (1040, 20684), (2080, 10342), (4160, 5171)]