51040840

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{239}}^1\times {\mathrm{281}}^1$

素因数の和:550

約数の個数: 64

約数和(自身を含む): 121824000

約数和(自身を除く): 70783160

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 239, 281, 380, 478, 562, 760, 956, 1124, 1195, 1405, 1912, 2248, 2390, 2810, 4541, 4780, 5339, 5620, 9082, 9560, 10678, 11240, 18164, 21356, 22705, 26695, 36328, 42712, 45410, 53390, 67159, 90820, 106780, 134318, 181640, 213560, 268636, 335795, 537272, 671590, 1276021, 1343180, 2552042, 2686360, 5104084, 6380105, 10208168, 12760210, 25520420, 51040840]

約数ペア:

[(1, 51040840), (2, 25520420), (4, 12760210), (5, 10208168), (8, 6380105), (10, 5104084), (19, 2686360), (20, 2552042), (38, 1343180), (40, 1276021), (76, 671590), (95, 537272), (152, 335795), (190, 268636), (239, 213560), (281, 181640), (380, 134318), (478, 106780), (562, 90820), (760, 67159), (956, 53390), (1124, 45410), (1195, 42712), (1405, 36328), (1912, 26695), (2248, 22705), (2390, 21356), (2810, 18164), (4541, 11240), (4780, 10678), (5339, 9560), (5620, 9082)]