81784880

素因数分解:

$2^4\times 5^1\times {\mathrm{83}}^1\times {\mathrm{109}}^1\times {\mathrm{113}}^1$

素因数の和:318

約数の個数: 80

約数和(自身を含む): 195924960

約数和(自身を除く): 114140080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 83, 109, 113, 166, 218, 226, 332, 415, 436, 452, 545, 565, 664, 830, 872, 904, 1090, 1130, 1328, 1660, 1744, 1808, 2180, 2260, 3320, 4360, 4520, 6640, 8720, 9040, 9047, 9379, 12317, 18094, 18758, 24634, 36188, 37516, 45235, 46895, 49268, 61585, 72376, 75032, 90470, 93790, 98536, 123170, 144752, 150064, 180940, 187580, 197072, 246340, 361880, 375160, 492680, 723760, 750320, 985360, 1022311, 2044622, 4089244, 5111555, 8178488, 10223110, 16356976, 20446220, 40892440, 81784880]

約数ペア:

[(1, 81784880), (2, 40892440), (4, 20446220), (5, 16356976), (8, 10223110), (10, 8178488), (16, 5111555), (20, 4089244), (40, 2044622), (80, 1022311), (83, 985360), (109, 750320), (113, 723760), (166, 492680), (218, 375160), (226, 361880), (332, 246340), (415, 197072), (436, 187580), (452, 180940), (545, 150064), (565, 144752), (664, 123170), (830, 98536), (872, 93790), (904, 90470), (1090, 75032), (1130, 72376), (1328, 61585), (1660, 49268), (1744, 46895), (1808, 45235), (2180, 37516), (2260, 36188), (3320, 24634), (4360, 18758), (4520, 18094), (6640, 12317), (8720, 9379), (9040, 9047)]