21433275

素因数分解:

$3^3\times 5^2\times {\mathrm{113}}^1\times {\mathrm{281}}^1$

素因数の和:413

約数の個数: 48

約数和(自身を含む): 39863520

約数和(自身を除く): 18430245

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 113, 135, 225, 281, 339, 565, 675, 843, 1017, 1405, 1695, 2529, 2825, 3051, 4215, 5085, 7025, 7587, 8475, 12645, 15255, 21075, 25425, 31753, 37935, 63225, 76275, 95259, 158765, 189675, 285777, 476295, 793825, 857331, 1428885, 2381475, 4286655, 7144425, 21433275]

約数ペア:

[(1, 21433275), (3, 7144425), (5, 4286655), (9, 2381475), (15, 1428885), (25, 857331), (27, 793825), (45, 476295), (75, 285777), (113, 189675), (135, 158765), (225, 95259), (281, 76275), (339, 63225), (565, 37935), (675, 31753), (843, 25425), (1017, 21075), (1405, 15255), (1695, 12645), (2529, 8475), (2825, 7587), (3051, 7025), (4215, 5085)]