253291775

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1\times {\mathrm{131}}^1$

素因数の和:320

約数の個数: 48

約数和(自身を含む): 353548800

約数和(自身を除く): 100257025

約数列:

[1, 5, 11, 25, 55, 79, 89, 131, 275, 395, 445, 655, 869, 979, 1441, 1975, 2225, 3275, 4345, 4895, 7031, 7205, 10349, 11659, 21725, 24475, 35155, 36025, 51745, 58295, 77341, 113839, 128249, 175775, 258725, 291475, 386705, 569195, 641245, 921061, 1933525, 2845975, 3206225, 4605305, 10131671, 23026525, 50658355, 253291775]

約数ペア:

[(1, 253291775), (5, 50658355), (11, 23026525), (25, 10131671), (55, 4605305), (79, 3206225), (89, 2845975), (131, 1933525), (275, 921061), (395, 641245), (445, 569195), (655, 386705), (869, 291475), (979, 258725), (1441, 175775), (1975, 128249), (2225, 113839), (3275, 77341), (4345, 58295), (4895, 51745), (7031, 36025), (7205, 35155), (10349, 24475), (11659, 21725)]