201558125

素因数分解:

$5^4\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{103}}^1$

素因数の和:255

約数の個数: 40

約数和(自身を含む): 265115136

約数和(自身を除く): 63557011

約数列:

[1, 5, 25, 31, 101, 103, 125, 155, 505, 515, 625, 775, 2525, 2575, 3131, 3193, 3875, 10403, 12625, 12875, 15655, 15965, 19375, 52015, 63125, 64375, 78275, 79825, 260075, 322493, 391375, 399125, 1300375, 1612465, 1956875, 1995625, 6501875, 8062325, 40311625, 201558125]

約数ペア:

[(1, 201558125), (5, 40311625), (25, 8062325), (31, 6501875), (101, 1995625), (103, 1956875), (125, 1612465), (155, 1300375), (505, 399125), (515, 391375), (625, 322493), (775, 260075), (2525, 79825), (2575, 78275), (3131, 64375), (3193, 63125), (3875, 52015), (10403, 19375), (12625, 15965), (12875, 15655)]