209385625

素因数分解:

$5^4\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{107}}^1$

素因数の和:259

約数の個数: 40

約数和(自身を含む): 275311872

約数和(自身を除く): 65926247

約数列:

[1, 5, 25, 31, 101, 107, 125, 155, 505, 535, 625, 775, 2525, 2675, 3131, 3317, 3875, 10807, 12625, 13375, 15655, 16585, 19375, 54035, 63125, 66875, 78275, 82925, 270175, 335017, 391375, 414625, 1350875, 1675085, 1956875, 2073125, 6754375, 8375425, 41877125, 209385625]

約数ペア:

[(1, 209385625), (5, 41877125), (25, 8375425), (31, 6754375), (101, 2073125), (107, 1956875), (125, 1675085), (155, 1350875), (505, 414625), (535, 391375), (625, 335017), (775, 270175), (2525, 82925), (2675, 78275), (3131, 66875), (3317, 63125), (3875, 54035), (10807, 19375), (12625, 16585), (13375, 15655)]