21988620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{151}}^1\times {\mathrm{809}}^1$

素因数の和:975

約数の個数: 72

約数和(自身を含む): 67223520

約数和(自身を除く): 45234900

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 151, 180, 302, 453, 604, 755, 809, 906, 1359, 1510, 1618, 1812, 2265, 2427, 2718, 3020, 3236, 4045, 4530, 4854, 5436, 6795, 7281, 8090, 9060, 9708, 12135, 13590, 14562, 16180, 24270, 27180, 29124, 36405, 48540, 72810, 122159, 145620, 244318, 366477, 488636, 610795, 732954, 1099431, 1221590, 1465908, 1832385, 2198862, 2443180, 3664770, 4397724, 5497155, 7329540, 10994310, 21988620]

約数ペア:

[(1, 21988620), (2, 10994310), (3, 7329540), (4, 5497155), (5, 4397724), (6, 3664770), (9, 2443180), (10, 2198862), (12, 1832385), (15, 1465908), (18, 1221590), (20, 1099431), (30, 732954), (36, 610795), (45, 488636), (60, 366477), (90, 244318), (151, 145620), (180, 122159), (302, 72810), (453, 48540), (604, 36405), (755, 29124), (809, 27180), (906, 24270), (1359, 16180), (1510, 14562), (1618, 13590), (1812, 12135), (2265, 9708), (2427, 9060), (2718, 8090), (3020, 7281), (3236, 6795), (4045, 5436), (4530, 4854)]