20959620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{2887}}^1$

素因数の和:2921

約数の個数: 72

約数和(自身を含む): 64529472

約数和(自身を除く): 43569852

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 121, 132, 165, 220, 242, 330, 363, 484, 605, 660, 726, 1210, 1452, 1815, 2420, 2887, 3630, 5774, 7260, 8661, 11548, 14435, 17322, 28870, 31757, 34644, 43305, 57740, 63514, 86610, 95271, 127028, 158785, 173220, 190542, 317570, 349327, 381084, 476355, 635140, 698654, 952710, 1047981, 1397308, 1746635, 1905420, 2095962, 3493270, 4191924, 5239905, 6986540, 10479810, 20959620]

約数ペア:

[(1, 20959620), (2, 10479810), (3, 6986540), (4, 5239905), (5, 4191924), (6, 3493270), (10, 2095962), (11, 1905420), (12, 1746635), (15, 1397308), (20, 1047981), (22, 952710), (30, 698654), (33, 635140), (44, 476355), (55, 381084), (60, 349327), (66, 317570), (110, 190542), (121, 173220), (132, 158785), (165, 127028), (220, 95271), (242, 86610), (330, 63514), (363, 57740), (484, 43305), (605, 34644), (660, 31757), (726, 28870), (1210, 17322), (1452, 14435), (1815, 11548), (2420, 8661), (2887, 7260), (3630, 5774)]