21312354

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{1021}}^1$

素因数の和:1111

約数の個数: 48

約数和(自身を含む): 50331456

約数和(自身を除く): 29019102

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 49, 71, 98, 142, 147, 213, 294, 426, 497, 994, 1021, 1491, 2042, 2982, 3063, 3479, 6126, 6958, 7147, 10437, 14294, 20874, 21441, 42882, 50029, 72491, 100058, 144982, 150087, 217473, 300174, 434946, 507437, 1014874, 1522311, 3044622, 3552059, 7104118, 10656177, 21312354]

約数ペア:

[(1, 21312354), (2, 10656177), (3, 7104118), (6, 3552059), (7, 3044622), (14, 1522311), (21, 1014874), (42, 507437), (49, 434946), (71, 300174), (98, 217473), (142, 150087), (147, 144982), (213, 100058), (294, 72491), (426, 50029), (497, 42882), (994, 21441), (1021, 20874), (1491, 14294), (2042, 10437), (2982, 7147), (3063, 6958), (3479, 6126)]