21931605

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{227}}^1$

素因数の和:370

約数の個数: 48

約数和(自身を含む): 40547520

約数和(自身を除く): 18615915

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 113, 171, 227, 285, 339, 565, 681, 855, 1017, 1135, 1695, 2043, 2147, 3405, 4313, 5085, 6441, 10215, 10735, 12939, 19323, 21565, 25651, 32205, 38817, 64695, 76953, 96615, 128255, 194085, 230859, 384765, 487369, 1154295, 1462107, 2436845, 4386321, 7310535, 21931605]

約数ペア:

[(1, 21931605), (3, 7310535), (5, 4386321), (9, 2436845), (15, 1462107), (19, 1154295), (45, 487369), (57, 384765), (95, 230859), (113, 194085), (171, 128255), (227, 96615), (285, 76953), (339, 64695), (565, 38817), (681, 32205), (855, 25651), (1017, 21565), (1135, 19323), (1695, 12939), (2043, 10735), (2147, 10215), (3405, 6441), (4313, 5085)]