25520420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{239}}^1\times {\mathrm{281}}^1$

素因数の和:548

約数の個数: 48

約数和(自身を含む): 56851200

約数和(自身を除く): 31330780

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 239, 281, 380, 478, 562, 956, 1124, 1195, 1405, 2390, 2810, 4541, 4780, 5339, 5620, 9082, 10678, 18164, 21356, 22705, 26695, 45410, 53390, 67159, 90820, 106780, 134318, 268636, 335795, 671590, 1276021, 1343180, 2552042, 5104084, 6380105, 12760210, 25520420]

約数ペア:

[(1, 25520420), (2, 12760210), (4, 6380105), (5, 5104084), (10, 2552042), (19, 1343180), (20, 1276021), (38, 671590), (76, 335795), (95, 268636), (190, 134318), (239, 106780), (281, 90820), (380, 67159), (478, 53390), (562, 45410), (956, 26695), (1124, 22705), (1195, 21356), (1405, 18164), (2390, 10678), (2810, 9082), (4541, 5620), (4780, 5339)]