21086065

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{383}}^1$

素因数の和:430

約数の個数: 48

約数和(自身を含む): 34320384

約数和(自身を除く): 13234319

約数列:

[1, 5, 7, 11, 13, 35, 55, 65, 77, 91, 121, 143, 383, 385, 455, 605, 715, 847, 1001, 1573, 1915, 2681, 4213, 4235, 4979, 5005, 7865, 11011, 13405, 21065, 24895, 29491, 34853, 46343, 54769, 55055, 147455, 174265, 231715, 273845, 324401, 383383, 602459, 1622005, 1916915, 3012295, 4217213, 21086065]

約数ペア:

[(1, 21086065), (5, 4217213), (7, 3012295), (11, 1916915), (13, 1622005), (35, 602459), (55, 383383), (65, 324401), (77, 273845), (91, 231715), (121, 174265), (143, 147455), (383, 55055), (385, 54769), (455, 46343), (605, 34853), (715, 29491), (847, 24895), (1001, 21065), (1573, 13405), (1915, 11011), (2681, 7865), (4213, 5005), (4235, 4979)]