20781623512

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{121621}}^1$

素因数の和:121724

約数の個数: 64

約数和(自身を含む): 44134191360

約数和(自身を除く): 23352567848

約数列:

[1, 2, 4, 8, 13, 26, 31, 52, 53, 62, 104, 106, 124, 212, 248, 403, 424, 689, 806, 1378, 1612, 1643, 2756, 3224, 3286, 5512, 6572, 13144, 21359, 42718, 85436, 121621, 170872, 243242, 486484, 972968, 1581073, 3162146, 3770251, 6324292, 6445913, 7540502, 12648584, 12891826, 15081004, 25783652, 30162008, 49013263, 51567304, 83796869, 98026526, 167593738, 196053052, 199823303, 335187476, 392106104, 399646606, 670374952, 799293212, 1598586424, 2597702939, 5195405878, 10390811756, 20781623512]

約数ペア:

[(1, 20781623512), (2, 10390811756), (4, 5195405878), (8, 2597702939), (13, 1598586424), (26, 799293212), (31, 670374952), (52, 399646606), (53, 392106104), (62, 335187476), (104, 199823303), (106, 196053052), (124, 167593738), (212, 98026526), (248, 83796869), (403, 51567304), (424, 49013263), (689, 30162008), (806, 25783652), (1378, 15081004), (1612, 12891826), (1643, 12648584), (2756, 7540502), (3224, 6445913), (3286, 6324292), (5512, 3770251), (6572, 3162146), (13144, 1581073), (21359, 972968), (42718, 486484), (85436, 243242), (121621, 170872)]