20398308

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{113}}^1\times {\mathrm{307}}^1$

素因数の和:441

約数の個数: 72

約数和(自身を含む): 56038752

約数和(自身を除く): 35640444

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 84, 98, 113, 147, 196, 226, 294, 307, 339, 452, 588, 614, 678, 791, 921, 1228, 1356, 1582, 1842, 2149, 2373, 3164, 3684, 4298, 4746, 5537, 6447, 8596, 9492, 11074, 12894, 15043, 16611, 22148, 25788, 30086, 33222, 34691, 45129, 60172, 66444, 69382, 90258, 104073, 138764, 180516, 208146, 242837, 416292, 485674, 728511, 971348, 1457022, 1699859, 2914044, 3399718, 5099577, 6799436, 10199154, 20398308]

約数ペア:

[(1, 20398308), (2, 10199154), (3, 6799436), (4, 5099577), (6, 3399718), (7, 2914044), (12, 1699859), (14, 1457022), (21, 971348), (28, 728511), (42, 485674), (49, 416292), (84, 242837), (98, 208146), (113, 180516), (147, 138764), (196, 104073), (226, 90258), (294, 69382), (307, 66444), (339, 60172), (452, 45129), (588, 34691), (614, 33222), (678, 30086), (791, 25788), (921, 22148), (1228, 16611), (1356, 15043), (1582, 12894), (1842, 11074), (2149, 9492), (2373, 8596), (3164, 6447), (3684, 5537), (4298, 4746)]