20291480

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{431}}^1$

素因数の和:560

約数の個数: 64

約数和(自身を含む): 50388480

約数和(自身を除く): 30097000

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 107, 110, 214, 220, 428, 431, 440, 535, 856, 862, 1070, 1177, 1724, 2140, 2155, 2354, 3448, 4280, 4310, 4708, 4741, 5885, 8620, 9416, 9482, 11770, 17240, 18964, 23540, 23705, 37928, 46117, 47080, 47410, 92234, 94820, 184468, 189640, 230585, 368936, 461170, 507287, 922340, 1014574, 1844680, 2029148, 2536435, 4058296, 5072870, 10145740, 20291480]

約数ペア:

[(1, 20291480), (2, 10145740), (4, 5072870), (5, 4058296), (8, 2536435), (10, 2029148), (11, 1844680), (20, 1014574), (22, 922340), (40, 507287), (44, 461170), (55, 368936), (88, 230585), (107, 189640), (110, 184468), (214, 94820), (220, 92234), (428, 47410), (431, 47080), (440, 46117), (535, 37928), (856, 23705), (862, 23540), (1070, 18964), (1177, 17240), (1724, 11770), (2140, 9482), (2155, 9416), (2354, 8620), (3448, 5885), (4280, 4741), (4310, 4708)]