20999220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31817}}^1$

素因数の和:31840

約数の個数: 48

約数和(自身を含む): 64145088

約数和(自身を除く): 43145868

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 132, 165, 220, 330, 660, 31817, 63634, 95451, 127268, 159085, 190902, 318170, 349987, 381804, 477255, 636340, 699974, 954510, 1049961, 1399948, 1749935, 1909020, 2099922, 3499870, 4199844, 5249805, 6999740, 10499610, 20999220]

約数ペア:

[(1, 20999220), (2, 10499610), (3, 6999740), (4, 5249805), (5, 4199844), (6, 3499870), (10, 2099922), (11, 1909020), (12, 1749935), (15, 1399948), (20, 1049961), (22, 954510), (30, 699974), (33, 636340), (44, 477255), (55, 381804), (60, 349987), (66, 318170), (110, 190902), (132, 159085), (165, 127268), (220, 95451), (330, 63634), (660, 31817)]