21528430

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{383}}^1$

素因数の和:481

約数の個数: 64

約数和(自身を含む): 49102848

約数和(自身を除く): 27574418

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 73, 77, 110, 146, 154, 365, 383, 385, 511, 730, 766, 770, 803, 1022, 1606, 1915, 2555, 2681, 3830, 4015, 4213, 5110, 5362, 5621, 8030, 8426, 11242, 13405, 21065, 26810, 27959, 28105, 29491, 42130, 55918, 56210, 58982, 139795, 147455, 195713, 279590, 294910, 307549, 391426, 615098, 978565, 1537745, 1957130, 2152843, 3075490, 4305686, 10764215, 21528430]

約数ペア:

[(1, 21528430), (2, 10764215), (5, 4305686), (7, 3075490), (10, 2152843), (11, 1957130), (14, 1537745), (22, 978565), (35, 615098), (55, 391426), (70, 307549), (73, 294910), (77, 279590), (110, 195713), (146, 147455), (154, 139795), (365, 58982), (383, 56210), (385, 55918), (511, 42130), (730, 29491), (766, 28105), (770, 27959), (803, 26810), (1022, 21065), (1606, 13405), (1915, 11242), (2555, 8426), (2681, 8030), (3830, 5621), (4015, 5362), (4213, 5110)]