20173745840

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{229}}^1\times {\mathrm{25609}}^1$

素因数の和:25894

約数の個数: 80

約数和(自身を含む): 48206215200

約数和(自身を除く): 28032469360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 229, 344, 430, 458, 688, 860, 916, 1145, 1720, 1832, 2290, 3440, 3664, 4580, 9160, 9847, 18320, 19694, 25609, 39388, 49235, 51218, 78776, 98470, 102436, 128045, 157552, 196940, 204872, 256090, 393880, 409744, 512180, 787760, 1024360, 1101187, 2048720, 2202374, 4404748, 5505935, 5864461, 8809496, 11011870, 11728922, 17618992, 22023740, 23457844, 29322305, 44047480, 46915688, 58644610, 88094960, 93831376, 117289220, 234578440, 252171823, 469156880, 504343646, 1008687292, 1260859115, 2017374584, 2521718230, 4034749168, 5043436460, 10086872920, 20173745840]

約数ペア:

[(1, 20173745840), (2, 10086872920), (4, 5043436460), (5, 4034749168), (8, 2521718230), (10, 2017374584), (16, 1260859115), (20, 1008687292), (40, 504343646), (43, 469156880), (80, 252171823), (86, 234578440), (172, 117289220), (215, 93831376), (229, 88094960), (344, 58644610), (430, 46915688), (458, 44047480), (688, 29322305), (860, 23457844), (916, 22023740), (1145, 17618992), (1720, 11728922), (1832, 11011870), (2290, 8809496), (3440, 5864461), (3664, 5505935), (4580, 4404748), (9160, 2202374), (9847, 2048720), (18320, 1101187), (19694, 1024360), (25609, 787760), (39388, 512180), (49235, 409744), (51218, 393880), (78776, 256090), (98470, 204872), (102436, 196940), (128045, 157552)]