21490192

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{1171}}^1$

素因数の和:1247

約数の個数: 40

約数和(自身を含む): 44179712

約数和(自身を除く): 22689520

約数列:

[1, 2, 4, 8, 16, 31, 37, 62, 74, 124, 148, 248, 296, 496, 592, 1147, 1171, 2294, 2342, 4588, 4684, 9176, 9368, 18352, 18736, 36301, 43327, 72602, 86654, 145204, 173308, 290408, 346616, 580816, 693232, 1343137, 2686274, 5372548, 10745096, 21490192]

約数ペア:

[(1, 21490192), (2, 10745096), (4, 5372548), (8, 2686274), (16, 1343137), (31, 693232), (37, 580816), (62, 346616), (74, 290408), (124, 173308), (148, 145204), (248, 86654), (296, 72602), (496, 43327), (592, 36301), (1147, 18736), (1171, 18352), (2294, 9368), (2342, 9176), (4588, 4684)]