631780

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1019}}^1$

素因数の和:1059

約数の個数: 24

約数和(自身を含む): 1370880

約数和(自身を除く): 739100

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 1019, 2038, 4076, 5095, 10190, 20380, 31589, 63178, 126356, 157945, 315890, 631780]

約数ペア:

[(1, 631780), (2, 315890), (4, 157945), (5, 126356), (10, 63178), (20, 31589), (31, 20380), (62, 10190), (124, 5095), (155, 4076), (310, 2038), (620, 1019)]