20804765816

素因数分解:

$2^3\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{421}}^1\times {\mathrm{2287}}^1$

素因数の和:2824

約数の個数: 64

約数和(自身を含む): 40726308480

約数和(自身を除く): 19921542664

約数列:

[1, 2, 4, 8, 37, 73, 74, 146, 148, 292, 296, 421, 584, 842, 1684, 2287, 2701, 3368, 4574, 5402, 9148, 10804, 15577, 18296, 21608, 30733, 31154, 61466, 62308, 84619, 122932, 124616, 166951, 169238, 245864, 333902, 338476, 667804, 676952, 962827, 1137121, 1335608, 1925654, 2274242, 3851308, 4548484, 6177187, 7702616, 9096968, 12354374, 24708748, 35624599, 49417496, 70286371, 71249198, 140572742, 142498396, 281145484, 284996792, 562290968, 2600595727, 5201191454, 10402382908, 20804765816]

約数ペア:

[(1, 20804765816), (2, 10402382908), (4, 5201191454), (8, 2600595727), (37, 562290968), (73, 284996792), (74, 281145484), (146, 142498396), (148, 140572742), (292, 71249198), (296, 70286371), (421, 49417496), (584, 35624599), (842, 24708748), (1684, 12354374), (2287, 9096968), (2701, 7702616), (3368, 6177187), (4574, 4548484), (5402, 3851308), (9148, 2274242), (10804, 1925654), (15577, 1335608), (18296, 1137121), (21608, 962827), (30733, 676952), (31154, 667804), (61466, 338476), (62308, 333902), (84619, 245864), (122932, 169238), (124616, 166951)]