201621985

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{103}}^1\times {\mathrm{173}}^1$

素因数の和:385

約数の個数: 32

約数和(自身を含む): 257107968

約数和(自身を除く): 55485983

約数列:

[1, 5, 31, 73, 103, 155, 173, 365, 515, 865, 2263, 3193, 5363, 7519, 11315, 12629, 15965, 17819, 26815, 37595, 63145, 89095, 233089, 391499, 552389, 1165445, 1300787, 1957495, 2761945, 6503935, 40324397, 201621985]

約数ペア:

[(1, 201621985), (5, 40324397), (31, 6503935), (73, 2761945), (103, 1957495), (155, 1300787), (173, 1165445), (365, 552389), (515, 391499), (865, 233089), (2263, 89095), (3193, 63145), (5363, 37595), (7519, 26815), (11315, 17819), (12629, 15965)]