21856760

素因数分解:

$2^3\times 5^1\times {\mathrm{577}}^1\times {\mathrm{947}}^1$

素因数の和:1535

約数の個数: 32

約数和(自身を含む): 49314960

約数和(自身を除く): 27458200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 577, 947, 1154, 1894, 2308, 2885, 3788, 4616, 4735, 5770, 7576, 9470, 11540, 18940, 23080, 37880, 546419, 1092838, 2185676, 2732095, 4371352, 5464190, 10928380, 21856760]

約数ペア:

[(1, 21856760), (2, 10928380), (4, 5464190), (5, 4371352), (8, 2732095), (10, 2185676), (20, 1092838), (40, 546419), (577, 37880), (947, 23080), (1154, 18940), (1894, 11540), (2308, 9470), (2885, 7576), (3788, 5770), (4616, 4735)]