21838125

素因数分解:

$3^1\times 5^4\times {\mathrm{19}}^1\times {\mathrm{613}}^1$

素因数の和:655

約数の個数: 40

約数和(自身を含む): 38362720

約数和(自身を除く): 16524595

約数列:

[1, 3, 5, 15, 19, 25, 57, 75, 95, 125, 285, 375, 475, 613, 625, 1425, 1839, 1875, 2375, 3065, 7125, 9195, 11647, 11875, 15325, 34941, 35625, 45975, 58235, 76625, 174705, 229875, 291175, 383125, 873525, 1149375, 1455875, 4367625, 7279375, 21838125]

約数ペア:

[(1, 21838125), (3, 7279375), (5, 4367625), (15, 1455875), (19, 1149375), (25, 873525), (57, 383125), (75, 291175), (95, 229875), (125, 174705), (285, 76625), (375, 58235), (475, 45975), (613, 35625), (625, 34941), (1425, 15325), (1839, 11875), (1875, 11647), (2375, 9195), (3065, 7125)]