21091230

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{23}}^2\times {\mathrm{443}}^1$

素因数の和:502

約数の個数: 72

約数和(自身を含む): 57454488

約数和(自身を除く): 36363258

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 23, 30, 45, 46, 69, 90, 115, 138, 207, 230, 345, 414, 443, 529, 690, 886, 1035, 1058, 1329, 1587, 2070, 2215, 2645, 2658, 3174, 3987, 4430, 4761, 5290, 6645, 7935, 7974, 9522, 10189, 13290, 15870, 19935, 20378, 23805, 30567, 39870, 47610, 50945, 61134, 91701, 101890, 152835, 183402, 234347, 305670, 458505, 468694, 703041, 917010, 1171735, 1406082, 2109123, 2343470, 3515205, 4218246, 7030410, 10545615, 21091230]

約数ペア:

[(1, 21091230), (2, 10545615), (3, 7030410), (5, 4218246), (6, 3515205), (9, 2343470), (10, 2109123), (15, 1406082), (18, 1171735), (23, 917010), (30, 703041), (45, 468694), (46, 458505), (69, 305670), (90, 234347), (115, 183402), (138, 152835), (207, 101890), (230, 91701), (345, 61134), (414, 50945), (443, 47610), (529, 39870), (690, 30567), (886, 23805), (1035, 20378), (1058, 19935), (1329, 15870), (1587, 13290), (2070, 10189), (2215, 9522), (2645, 7974), (2658, 7935), (3174, 6645), (3987, 5290), (4430, 4761)]