217620125

素因数分解:

$5^3\times {\mathrm{37}}^1\times {\mathrm{211}}^1\times {\mathrm{223}}^1$

素因数の和:486

約数の個数: 32

約数和(自身を含む): 281508864

約数和(自身を除く): 63888739

約数列:

[1, 5, 25, 37, 125, 185, 211, 223, 925, 1055, 1115, 4625, 5275, 5575, 7807, 8251, 26375, 27875, 39035, 41255, 47053, 195175, 206275, 235265, 975875, 1031375, 1176325, 1740961, 5881625, 8704805, 43524025, 217620125]

約数ペア:

[(1, 217620125), (5, 43524025), (25, 8704805), (37, 5881625), (125, 1740961), (185, 1176325), (211, 1031375), (223, 975875), (925, 235265), (1055, 206275), (1115, 195175), (4625, 47053), (5275, 41255), (5575, 39035), (7807, 27875), (8251, 26375)]