21256668

素因数分解:

$2^2\times 3^5\times {\mathrm{19}}^1\times {\mathrm{1151}}^1$

素因数の和:1189

約数の個数: 72

約数和(自身を含む): 58705920

約数和(自身を除く): 37449252

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 27, 36, 38, 54, 57, 76, 81, 108, 114, 162, 171, 228, 243, 324, 342, 486, 513, 684, 972, 1026, 1151, 1539, 2052, 2302, 3078, 3453, 4604, 4617, 6156, 6906, 9234, 10359, 13812, 18468, 20718, 21869, 31077, 41436, 43738, 62154, 65607, 87476, 93231, 124308, 131214, 186462, 196821, 262428, 279693, 372924, 393642, 559386, 590463, 787284, 1118772, 1180926, 1771389, 2361852, 3542778, 5314167, 7085556, 10628334, 21256668]

約数ペア:

[(1, 21256668), (2, 10628334), (3, 7085556), (4, 5314167), (6, 3542778), (9, 2361852), (12, 1771389), (18, 1180926), (19, 1118772), (27, 787284), (36, 590463), (38, 559386), (54, 393642), (57, 372924), (76, 279693), (81, 262428), (108, 196821), (114, 186462), (162, 131214), (171, 124308), (228, 93231), (243, 87476), (324, 65607), (342, 62154), (486, 43738), (513, 41436), (684, 31077), (972, 21869), (1026, 20718), (1151, 18468), (1539, 13812), (2052, 10359), (2302, 9234), (3078, 6906), (3453, 6156), (4604, 4617)]