778546540

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{20201}}^1$

素因数の和:20298

約数の個数: 48

約数和(自身を含む): 1710543744

約数和(自身を除く): 931997204

約数列:

[1, 2, 4, 5, 10, 20, 41, 47, 82, 94, 164, 188, 205, 235, 410, 470, 820, 940, 1927, 3854, 7708, 9635, 19270, 20201, 38540, 40402, 80804, 101005, 202010, 404020, 828241, 949447, 1656482, 1898894, 3312964, 3797788, 4141205, 4747235, 8282410, 9494470, 16564820, 18988940, 38927327, 77854654, 155709308, 194636635, 389273270, 778546540]

約数ペア:

[(1, 778546540), (2, 389273270), (4, 194636635), (5, 155709308), (10, 77854654), (20, 38927327), (41, 18988940), (47, 16564820), (82, 9494470), (94, 8282410), (164, 4747235), (188, 4141205), (205, 3797788), (235, 3312964), (410, 1898894), (470, 1656482), (820, 949447), (940, 828241), (1927, 404020), (3854, 202010), (7708, 101005), (9635, 80804), (19270, 40402), (20201, 38540)]