21103460225

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{241}}^1\times {\mathrm{269}}^1\times {\mathrm{449}}^1$

素因数の和:998

約数の個数: 48

約数和(自身を含む): 27344790000

約数和(自身を除く): 6241329775

約数列:

[1, 5, 25, 29, 145, 241, 269, 449, 725, 1205, 1345, 2245, 6025, 6725, 6989, 7801, 11225, 13021, 34945, 39005, 64829, 65105, 108209, 120781, 174725, 195025, 324145, 325525, 541045, 603905, 1620725, 1880041, 2705225, 3019525, 3138061, 3502649, 9400205, 15690305, 17513245, 29108221, 47001025, 78451525, 87566225, 145541105, 727705525, 844138409, 4220692045, 21103460225]

約数ペア:

[(1, 21103460225), (5, 4220692045), (25, 844138409), (29, 727705525), (145, 145541105), (241, 87566225), (269, 78451525), (449, 47001025), (725, 29108221), (1205, 17513245), (1345, 15690305), (2245, 9400205), (6025, 3502649), (6725, 3138061), (6989, 3019525), (7801, 2705225), (11225, 1880041), (13021, 1620725), (34945, 603905), (39005, 541045), (64829, 325525), (65105, 324145), (108209, 195025), (120781, 174725)]