21611475

素因数分解:

$3^3\times 5^2\times {\mathrm{101}}^1\times {\mathrm{317}}^1$

素因数の和:437

約数の個数: 48

約数和(自身を含む): 40220640

約数和(自身を除く): 18609165

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 101, 135, 225, 303, 317, 505, 675, 909, 951, 1515, 1585, 2525, 2727, 2853, 4545, 4755, 7575, 7925, 8559, 13635, 14265, 22725, 23775, 32017, 42795, 68175, 71325, 96051, 160085, 213975, 288153, 480255, 800425, 864459, 1440765, 2401275, 4322295, 7203825, 21611475]

約数ペア:

[(1, 21611475), (3, 7203825), (5, 4322295), (9, 2401275), (15, 1440765), (25, 864459), (27, 800425), (45, 480255), (75, 288153), (101, 213975), (135, 160085), (225, 96051), (303, 71325), (317, 68175), (505, 42795), (675, 32017), (909, 23775), (951, 22725), (1515, 14265), (1585, 13635), (2525, 8559), (2727, 7925), (2853, 7575), (4545, 4755)]