18981950

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1$

素因数の和:126

約数の個数: 96

約数和(自身を含む): 42184800

約数和(自身を除く): 23202850

約数列:

[1, 2, 5, 10, 13, 19, 25, 26, 29, 38, 50, 53, 58, 65, 95, 106, 130, 145, 190, 247, 265, 290, 325, 377, 475, 494, 530, 551, 650, 689, 725, 754, 950, 1007, 1102, 1235, 1325, 1378, 1450, 1537, 1885, 2014, 2470, 2650, 2755, 3074, 3445, 3770, 5035, 5510, 6175, 6890, 7163, 7685, 9425, 10070, 12350, 13091, 13775, 14326, 15370, 17225, 18850, 19981, 25175, 26182, 27550, 29203, 34450, 35815, 38425, 39962, 50350, 58406, 65455, 71630, 76850, 99905, 130910, 146015, 179075, 199810, 292030, 327275, 358150, 379639, 499525, 654550, 730075, 759278, 999050, 1460150, 1898195, 3796390, 9490975, 18981950]

約数ペア:

[(1, 18981950), (2, 9490975), (5, 3796390), (10, 1898195), (13, 1460150), (19, 999050), (25, 759278), (26, 730075), (29, 654550), (38, 499525), (50, 379639), (53, 358150), (58, 327275), (65, 292030), (95, 199810), (106, 179075), (130, 146015), (145, 130910), (190, 99905), (247, 76850), (265, 71630), (290, 65455), (325, 58406), (377, 50350), (475, 39962), (494, 38425), (530, 35815), (551, 34450), (650, 29203), (689, 27550), (725, 26182), (754, 25175), (950, 19981), (1007, 18850), (1102, 17225), (1235, 15370), (1325, 14326), (1378, 13775), (1450, 13091), (1537, 12350), (1885, 10070), (2014, 9425), (2470, 7685), (2650, 7163), (2755, 6890), (3074, 6175), (3445, 5510), (3770, 5035)]