19956540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{2539}}^1$

素因数の和:2682

約数の個数: 48

約数和(自身を含む): 56327040

約数和(自身を除く): 36370500

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 131, 262, 393, 524, 655, 786, 1310, 1572, 1965, 2539, 2620, 3930, 5078, 7617, 7860, 10156, 12695, 15234, 25390, 30468, 38085, 50780, 76170, 152340, 332609, 665218, 997827, 1330436, 1663045, 1995654, 3326090, 3991308, 4989135, 6652180, 9978270, 19956540]

約数ペア:

[(1, 19956540), (2, 9978270), (3, 6652180), (4, 4989135), (5, 3991308), (6, 3326090), (10, 1995654), (12, 1663045), (15, 1330436), (20, 997827), (30, 665218), (60, 332609), (131, 152340), (262, 76170), (393, 50780), (524, 38085), (655, 30468), (786, 25390), (1310, 15234), (1572, 12695), (1965, 10156), (2539, 7860), (2620, 7617), (3930, 5078)]