21000427964

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{389}}^1\times {\mathrm{821}}^1\times {\mathrm{967}}^1$

素因数の和:2198

約数の個数: 48

約数和(自身を含む): 39100501440

約数和(自身を除く): 18100073476

約数列:

[1, 2, 4, 17, 34, 68, 389, 778, 821, 967, 1556, 1642, 1934, 3284, 3868, 6613, 13226, 13957, 16439, 26452, 27914, 32878, 55828, 65756, 319369, 376163, 638738, 752326, 793907, 1277476, 1504652, 1587814, 3175628, 5429273, 6394771, 10858546, 12789542, 13496419, 21717092, 25579084, 26992838, 53985676, 308829823, 617659646, 1235319292, 5250106991, 10500213982, 21000427964]

約数ペア:

[(1, 21000427964), (2, 10500213982), (4, 5250106991), (17, 1235319292), (34, 617659646), (68, 308829823), (389, 53985676), (778, 26992838), (821, 25579084), (967, 21717092), (1556, 13496419), (1642, 12789542), (1934, 10858546), (3284, 6394771), (3868, 5429273), (6613, 3175628), (13226, 1587814), (13957, 1504652), (16439, 1277476), (26452, 793907), (27914, 752326), (32878, 638738), (55828, 376163), (65756, 319369)]