20787660

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{2179}}^1$

素因数の和:2247

約数の個数: 72

約数和(自身を含む): 64275120

約数和(自身を除く): 43487460

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 53, 60, 90, 106, 159, 180, 212, 265, 318, 477, 530, 636, 795, 954, 1060, 1590, 1908, 2179, 2385, 3180, 4358, 4770, 6537, 8716, 9540, 10895, 13074, 19611, 21790, 26148, 32685, 39222, 43580, 65370, 78444, 98055, 115487, 130740, 196110, 230974, 346461, 392220, 461948, 577435, 692922, 1039383, 1154870, 1385844, 1732305, 2078766, 2309740, 3464610, 4157532, 5196915, 6929220, 10393830, 20787660]

約数ペア:

[(1, 20787660), (2, 10393830), (3, 6929220), (4, 5196915), (5, 4157532), (6, 3464610), (9, 2309740), (10, 2078766), (12, 1732305), (15, 1385844), (18, 1154870), (20, 1039383), (30, 692922), (36, 577435), (45, 461948), (53, 392220), (60, 346461), (90, 230974), (106, 196110), (159, 130740), (180, 115487), (212, 98055), (265, 78444), (318, 65370), (477, 43580), (530, 39222), (636, 32685), (795, 26148), (954, 21790), (1060, 19611), (1590, 13074), (1908, 10895), (2179, 9540), (2385, 8716), (3180, 6537), (4358, 4770)]