31370940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{439}}^1$

素因数の和:851

約数の個数: 72

約数和(自身を含む): 95615520

約数和(自身を除く): 64244580

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 397, 439, 794, 878, 1191, 1317, 1588, 1756, 1985, 2195, 2382, 2634, 3573, 3951, 3970, 4390, 4764, 5268, 5955, 6585, 7146, 7902, 7940, 8780, 11910, 13170, 14292, 15804, 17865, 19755, 23820, 26340, 35730, 39510, 71460, 79020, 174283, 348566, 522849, 697132, 871415, 1045698, 1568547, 1742830, 2091396, 2614245, 3137094, 3485660, 5228490, 6274188, 7842735, 10456980, 15685470, 31370940]

約数ペア:

[(1, 31370940), (2, 15685470), (3, 10456980), (4, 7842735), (5, 6274188), (6, 5228490), (9, 3485660), (10, 3137094), (12, 2614245), (15, 2091396), (18, 1742830), (20, 1568547), (30, 1045698), (36, 871415), (45, 697132), (60, 522849), (90, 348566), (180, 174283), (397, 79020), (439, 71460), (794, 39510), (878, 35730), (1191, 26340), (1317, 23820), (1588, 19755), (1756, 17865), (1985, 15804), (2195, 14292), (2382, 13170), (2634, 11910), (3573, 8780), (3951, 7940), (3970, 7902), (4390, 7146), (4764, 6585), (5268, 5955)]