20748714

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{457}}^1$

素因数の和:539

約数の個数: 64

約数和(自身を含む): 50651136

約数和(自身を除く): 29902422

約数列:

[1, 2, 3, 6, 7, 14, 21, 23, 42, 46, 47, 69, 94, 138, 141, 161, 282, 322, 329, 457, 483, 658, 914, 966, 987, 1081, 1371, 1974, 2162, 2742, 3199, 3243, 6398, 6486, 7567, 9597, 10511, 15134, 19194, 21022, 21479, 22701, 31533, 42958, 45402, 63066, 64437, 73577, 128874, 147154, 150353, 220731, 300706, 441462, 451059, 494017, 902118, 988034, 1482051, 2964102, 3458119, 6916238, 10374357, 20748714]

約数ペア:

[(1, 20748714), (2, 10374357), (3, 6916238), (6, 3458119), (7, 2964102), (14, 1482051), (21, 988034), (23, 902118), (42, 494017), (46, 451059), (47, 441462), (69, 300706), (94, 220731), (138, 150353), (141, 147154), (161, 128874), (282, 73577), (322, 64437), (329, 63066), (457, 45402), (483, 42958), (658, 31533), (914, 22701), (966, 21479), (987, 21022), (1081, 19194), (1371, 15134), (1974, 10511), (2162, 9597), (2742, 7567), (3199, 6486), (3243, 6398)]