21175232

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{821}}^1$

素因数の和:877

約数の個数: 56

約数和(自身を含む): 46768512

約数和(自身を除く): 25593280

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 32, 52, 62, 64, 104, 124, 208, 248, 403, 416, 496, 806, 821, 832, 992, 1612, 1642, 1984, 3224, 3284, 6448, 6568, 10673, 12896, 13136, 21346, 25451, 25792, 26272, 42692, 50902, 52544, 85384, 101804, 170768, 203608, 330863, 341536, 407216, 661726, 683072, 814432, 1323452, 1628864, 2646904, 5293808, 10587616, 21175232]

約数ペア:

[(1, 21175232), (2, 10587616), (4, 5293808), (8, 2646904), (13, 1628864), (16, 1323452), (26, 814432), (31, 683072), (32, 661726), (52, 407216), (62, 341536), (64, 330863), (104, 203608), (124, 170768), (208, 101804), (248, 85384), (403, 52544), (416, 50902), (496, 42692), (806, 26272), (821, 25792), (832, 25451), (992, 21346), (1612, 13136), (1642, 12896), (1984, 10673), (3224, 6568), (3284, 6448)]