20163697864

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{443}}^1\times {\mathrm{4909}}^1$

素因数の和:5438

約数の個数: 64

約数和(自身を含む): 40548744000

約数和(自身を除く): 20385046136

約数列:

[1, 2, 4, 8, 19, 38, 61, 76, 122, 152, 244, 443, 488, 886, 1159, 1772, 2318, 3544, 4636, 4909, 8417, 9272, 9818, 16834, 19636, 27023, 33668, 39272, 54046, 67336, 93271, 108092, 186542, 216184, 299449, 373084, 513437, 598898, 746168, 1026874, 1197796, 2053748, 2174687, 2395592, 4107496, 4349374, 5689531, 8698748, 11379062, 17397496, 22758124, 41319053, 45516248, 82638106, 132655907, 165276212, 265311814, 330552424, 530623628, 1061247256, 2520462233, 5040924466, 10081848932, 20163697864]

約数ペア:

[(1, 20163697864), (2, 10081848932), (4, 5040924466), (8, 2520462233), (19, 1061247256), (38, 530623628), (61, 330552424), (76, 265311814), (122, 165276212), (152, 132655907), (244, 82638106), (443, 45516248), (488, 41319053), (886, 22758124), (1159, 17397496), (1772, 11379062), (2318, 8698748), (3544, 5689531), (4636, 4349374), (4909, 4107496), (8417, 2395592), (9272, 2174687), (9818, 2053748), (16834, 1197796), (19636, 1026874), (27023, 746168), (33668, 598898), (39272, 513437), (54046, 373084), (67336, 299449), (93271, 216184), (108092, 186542)]