18649748

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^3\times {\mathrm{73}}^1$

素因数の和:141

約数の個数: 48

約数和(自身を含む): 37855440

約数和(自身を除く): 19205692

約数列:

[1, 2, 4, 13, 17, 26, 34, 52, 68, 73, 146, 221, 289, 292, 442, 578, 884, 949, 1156, 1241, 1898, 2482, 3757, 3796, 4913, 4964, 7514, 9826, 15028, 16133, 19652, 21097, 32266, 42194, 63869, 64532, 84388, 127738, 255476, 274261, 358649, 548522, 717298, 1097044, 1434596, 4662437, 9324874, 18649748]

約数ペア:

[(1, 18649748), (2, 9324874), (4, 4662437), (13, 1434596), (17, 1097044), (26, 717298), (34, 548522), (52, 358649), (68, 274261), (73, 255476), (146, 127738), (221, 84388), (289, 64532), (292, 63869), (442, 42194), (578, 32266), (884, 21097), (949, 19652), (1156, 16133), (1241, 15028), (1898, 9826), (2482, 7514), (3757, 4964), (3796, 4913)]