20701476

素因数分解:

$2^2\times 3^2\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{251}}^1$

素因数の和:369

約数の個数: 72

約数和(自身を含む): 55036800

約数和(自身を除く): 34335324

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 29, 36, 58, 79, 87, 116, 158, 174, 237, 251, 261, 316, 348, 474, 502, 522, 711, 753, 948, 1004, 1044, 1422, 1506, 2259, 2291, 2844, 3012, 4518, 4582, 6873, 7279, 9036, 9164, 13746, 14558, 19829, 20619, 21837, 27492, 29116, 39658, 41238, 43674, 59487, 65511, 79316, 82476, 87348, 118974, 131022, 178461, 237948, 262044, 356922, 575041, 713844, 1150082, 1725123, 2300164, 3450246, 5175369, 6900492, 10350738, 20701476]

約数ペア:

[(1, 20701476), (2, 10350738), (3, 6900492), (4, 5175369), (6, 3450246), (9, 2300164), (12, 1725123), (18, 1150082), (29, 713844), (36, 575041), (58, 356922), (79, 262044), (87, 237948), (116, 178461), (158, 131022), (174, 118974), (237, 87348), (251, 82476), (261, 79316), (316, 65511), (348, 59487), (474, 43674), (502, 41238), (522, 39658), (711, 29116), (753, 27492), (948, 21837), (1004, 20619), (1044, 19829), (1422, 14558), (1506, 13746), (2259, 9164), (2291, 9036), (2844, 7279), (3012, 6873), (4518, 4582)]