20962045

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{103}}^1$

素因数の和:253

約数の個数: 32

約数和(自身を含む): 28514304

約数和(自身を除く): 7552259

約数列:

[1, 5, 13, 31, 65, 101, 103, 155, 403, 505, 515, 1313, 1339, 2015, 3131, 3193, 6565, 6695, 10403, 15655, 15965, 40703, 41509, 52015, 135239, 203515, 207545, 322493, 676195, 1612465, 4192409, 20962045]

約数ペア:

[(1, 20962045), (5, 4192409), (13, 1612465), (31, 676195), (65, 322493), (101, 207545), (103, 203515), (155, 135239), (403, 52015), (505, 41509), (515, 40703), (1313, 15965), (1339, 15655), (2015, 10403), (3131, 6695), (3193, 6565)]