21742188

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^2\times {\mathrm{71}}^1\times {\mathrm{151}}^1$

素因数の和:255

約数の個数: 72

約数和(自身を含む): 56077056

約数和(自身を除く): 34334868

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 71, 78, 142, 151, 156, 169, 213, 284, 302, 338, 426, 453, 507, 604, 676, 852, 906, 923, 1014, 1812, 1846, 1963, 2028, 2769, 3692, 3926, 5538, 5889, 7852, 10721, 11076, 11778, 11999, 21442, 23556, 23998, 25519, 32163, 35997, 42884, 47996, 51038, 64326, 71994, 76557, 102076, 128652, 139373, 143988, 153114, 278746, 306228, 418119, 557492, 836238, 1672476, 1811849, 3623698, 5435547, 7247396, 10871094, 21742188]

約数ペア:

[(1, 21742188), (2, 10871094), (3, 7247396), (4, 5435547), (6, 3623698), (12, 1811849), (13, 1672476), (26, 836238), (39, 557492), (52, 418119), (71, 306228), (78, 278746), (142, 153114), (151, 143988), (156, 139373), (169, 128652), (213, 102076), (284, 76557), (302, 71994), (338, 64326), (426, 51038), (453, 47996), (507, 42884), (604, 35997), (676, 32163), (852, 25519), (906, 23998), (923, 23556), (1014, 21442), (1812, 11999), (1846, 11778), (1963, 11076), (2028, 10721), (2769, 7852), (3692, 5889), (3926, 5538)]