20408909885

素因数分解:

$5^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{12893}}^1$

素因数の和:13003

約数の個数: 64

約数和(自身を含む): 31193164800

約数和(自身を除く): 10784254915

約数列:

[1, 5, 7, 13, 35, 49, 65, 71, 91, 245, 343, 355, 455, 497, 637, 923, 1715, 2485, 3185, 3479, 4459, 4615, 6461, 12893, 17395, 22295, 24353, 32305, 45227, 64465, 90251, 121765, 167609, 226135, 316589, 451255, 631757, 838045, 915403, 1173263, 1582945, 3158785, 4422299, 4577015, 5866315, 6407821, 8212841, 11900239, 22111495, 32039105, 41064205, 44854747, 57489887, 59501195, 83301673, 224273735, 287449435, 313983229, 416508365, 583111711, 1569916145, 2915558555, 4081781977, 20408909885]

約数ペア:

[(1, 20408909885), (5, 4081781977), (7, 2915558555), (13, 1569916145), (35, 583111711), (49, 416508365), (65, 313983229), (71, 287449435), (91, 224273735), (245, 83301673), (343, 59501195), (355, 57489887), (455, 44854747), (497, 41064205), (637, 32039105), (923, 22111495), (1715, 11900239), (2485, 8212841), (3185, 6407821), (3479, 5866315), (4459, 4577015), (4615, 4422299), (6461, 3158785), (12893, 1582945), (17395, 1173263), (22295, 915403), (24353, 838045), (32305, 631757), (45227, 451255), (64465, 316589), (90251, 226135), (121765, 167609)]