21696125

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{509}}^1$

素因数の和:566

約数の個数: 32

約数和(自身を含む): 30551040

約数和(自身を除く): 8854915

約数列:

[1, 5, 11, 25, 31, 55, 125, 155, 275, 341, 509, 775, 1375, 1705, 2545, 3875, 5599, 8525, 12725, 15779, 27995, 42625, 63625, 78895, 139975, 173569, 394475, 699875, 867845, 1972375, 4339225, 21696125]

約数ペア:

[(1, 21696125), (5, 4339225), (11, 1972375), (25, 867845), (31, 699875), (55, 394475), (125, 173569), (155, 139975), (275, 78895), (341, 63625), (509, 42625), (775, 27995), (1375, 15779), (1705, 12725), (2545, 8525), (3875, 5599)]