51404980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^2\times {\mathrm{139}}^1$

素因数の和:241

約数の個数: 72

約数和(自身を含む): 121574880

約数和(自身を除く): 70169900

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 41, 44, 55, 82, 110, 139, 164, 205, 220, 278, 410, 451, 556, 695, 820, 902, 1390, 1529, 1681, 1804, 2255, 2780, 3058, 3362, 4510, 5699, 6116, 6724, 7645, 8405, 9020, 11398, 15290, 16810, 18491, 22796, 28495, 30580, 33620, 36982, 56990, 62689, 73964, 92455, 113980, 125378, 184910, 233659, 250756, 313445, 369820, 467318, 626890, 934636, 1168295, 1253780, 2336590, 2570249, 4673180, 5140498, 10280996, 12851245, 25702490, 51404980]

約数ペア:

[(1, 51404980), (2, 25702490), (4, 12851245), (5, 10280996), (10, 5140498), (11, 4673180), (20, 2570249), (22, 2336590), (41, 1253780), (44, 1168295), (55, 934636), (82, 626890), (110, 467318), (139, 369820), (164, 313445), (205, 250756), (220, 233659), (278, 184910), (410, 125378), (451, 113980), (556, 92455), (695, 73964), (820, 62689), (902, 56990), (1390, 36982), (1529, 33620), (1681, 30580), (1804, 28495), (2255, 22796), (2780, 18491), (3058, 16810), (3362, 15290), (4510, 11398), (5699, 9020), (6116, 8405), (6724, 7645)]