18712840

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{15091}}^1$

素因数の和:15133

約数の個数: 32

約数和(自身を含む): 43464960

約数和(自身を除く): 24752120

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 15091, 30182, 60364, 75455, 120728, 150910, 301820, 467821, 603640, 935642, 1871284, 2339105, 3742568, 4678210, 9356420, 18712840]

約数ペア:

[(1, 18712840), (2, 9356420), (4, 4678210), (5, 3742568), (8, 2339105), (10, 1871284), (20, 935642), (31, 603640), (40, 467821), (62, 301820), (124, 150910), (155, 120728), (248, 75455), (310, 60364), (620, 30182), (1240, 15091)]