21852520

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{17623}}^1$

素因数の和:17665

約数の個数: 32

約数和(自身を含む): 50757120

約数和(自身を除く): 28904600

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 17623, 35246, 70492, 88115, 140984, 176230, 352460, 546313, 704920, 1092626, 2185252, 2731565, 4370504, 5463130, 10926260, 21852520]

約数ペア:

[(1, 21852520), (2, 10926260), (4, 5463130), (5, 4370504), (8, 2731565), (10, 2185252), (20, 1092626), (31, 704920), (40, 546313), (62, 352460), (124, 176230), (155, 140984), (248, 88115), (310, 70492), (620, 35246), (1240, 17623)]