891567140

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{13763}}^1$

素因数の和:13892

約数の個数: 48

約数和(自身を含む): 1942375680

約数和(自身を除く): 1050808540

約数列:

[1, 2, 4, 5, 10, 20, 41, 79, 82, 158, 164, 205, 316, 395, 410, 790, 820, 1580, 3239, 6478, 12956, 13763, 16195, 27526, 32390, 55052, 64780, 68815, 137630, 275260, 564283, 1087277, 1128566, 2174554, 2257132, 2821415, 4349108, 5436385, 5642830, 10872770, 11285660, 21745540, 44578357, 89156714, 178313428, 222891785, 445783570, 891567140]

約数ペア:

[(1, 891567140), (2, 445783570), (4, 222891785), (5, 178313428), (10, 89156714), (20, 44578357), (41, 21745540), (79, 11285660), (82, 10872770), (158, 5642830), (164, 5436385), (205, 4349108), (316, 2821415), (395, 2257132), (410, 2174554), (790, 1128566), (820, 1087277), (1580, 564283), (3239, 275260), (6478, 137630), (12956, 68815), (13763, 64780), (16195, 55052), (27526, 32390)]