20689460

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{599}}^1$

素因数の和:776

約数の個数: 48

約数和(自身を含む): 47779200

約数和(自身を除く): 27089740

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 157, 220, 314, 599, 628, 785, 1198, 1570, 1727, 2396, 2995, 3140, 3454, 5990, 6589, 6908, 8635, 11980, 13178, 17270, 26356, 32945, 34540, 65890, 94043, 131780, 188086, 376172, 470215, 940430, 1034473, 1880860, 2068946, 4137892, 5172365, 10344730, 20689460]

約数ペア:

[(1, 20689460), (2, 10344730), (4, 5172365), (5, 4137892), (10, 2068946), (11, 1880860), (20, 1034473), (22, 940430), (44, 470215), (55, 376172), (110, 188086), (157, 131780), (220, 94043), (314, 65890), (599, 34540), (628, 32945), (785, 26356), (1198, 17270), (1570, 13178), (1727, 11980), (2396, 8635), (2995, 6908), (3140, 6589), (3454, 5990)]