397997680

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{911}}^1$

素因数の和:1094

約数の個数: 80

約数和(自身を含む): 955367424

約数和(自身を除く): 557369744

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 127, 172, 215, 254, 344, 430, 508, 635, 688, 860, 911, 1016, 1270, 1720, 1822, 2032, 2540, 3440, 3644, 4555, 5080, 5461, 7288, 9110, 10160, 10922, 14576, 18220, 21844, 27305, 36440, 39173, 43688, 54610, 72880, 78346, 87376, 109220, 115697, 156692, 195865, 218440, 231394, 313384, 391730, 436880, 462788, 578485, 626768, 783460, 925576, 1156970, 1566920, 1851152, 2313940, 3133840, 4627880, 4974971, 9255760, 9949942, 19899884, 24874855, 39799768, 49749710, 79599536, 99499420, 198998840, 397997680]

約数ペア:

[(1, 397997680), (2, 198998840), (4, 99499420), (5, 79599536), (8, 49749710), (10, 39799768), (16, 24874855), (20, 19899884), (40, 9949942), (43, 9255760), (80, 4974971), (86, 4627880), (127, 3133840), (172, 2313940), (215, 1851152), (254, 1566920), (344, 1156970), (430, 925576), (508, 783460), (635, 626768), (688, 578485), (860, 462788), (911, 436880), (1016, 391730), (1270, 313384), (1720, 231394), (1822, 218440), (2032, 195865), (2540, 156692), (3440, 115697), (3644, 109220), (4555, 87376), (5080, 78346), (5461, 72880), (7288, 54610), (9110, 43688), (10160, 39173), (10922, 36440), (14576, 27305), (18220, 21844)]