81962920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{967}}^1$

素因数の和:1154

約数の個数: 64

約数和(自身を含む): 200027520

約数和(自身を除く): 118064600

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 163, 260, 326, 520, 652, 815, 967, 1304, 1630, 1934, 2119, 3260, 3868, 4238, 4835, 6520, 7736, 8476, 9670, 10595, 12571, 16952, 19340, 21190, 25142, 38680, 42380, 50284, 62855, 84760, 100568, 125710, 157621, 251420, 315242, 502840, 630484, 788105, 1260968, 1576210, 2049073, 3152420, 4098146, 6304840, 8196292, 10245365, 16392584, 20490730, 40981460, 81962920]

約数ペア:

[(1, 81962920), (2, 40981460), (4, 20490730), (5, 16392584), (8, 10245365), (10, 8196292), (13, 6304840), (20, 4098146), (26, 3152420), (40, 2049073), (52, 1576210), (65, 1260968), (104, 788105), (130, 630484), (163, 502840), (260, 315242), (326, 251420), (520, 157621), (652, 125710), (815, 100568), (967, 84760), (1304, 62855), (1630, 50284), (1934, 42380), (2119, 38680), (3260, 25142), (3868, 21190), (4238, 19340), (4835, 16952), (6520, 12571), (7736, 10595), (8476, 9670)]