31313720

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{25253}}^1$

素因数の和:25295

約数の個数: 32

約数和(自身を含む): 72731520

約数和(自身を除く): 41417800

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 25253, 50506, 101012, 126265, 202024, 252530, 505060, 782843, 1010120, 1565686, 3131372, 3914215, 6262744, 7828430, 15656860, 31313720]

約数ペア:

[(1, 31313720), (2, 15656860), (4, 7828430), (5, 6262744), (8, 3914215), (10, 3131372), (20, 1565686), (31, 1010120), (40, 782843), (62, 505060), (124, 252530), (155, 202024), (248, 126265), (310, 101012), (620, 50506), (1240, 25253)]