1218725

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{41}}^2$

素因数の和:121

約数の個数: 18

約数和(自身を含む): 1602390

約数和(自身を除く): 383665

約数列:

[1, 5, 25, 29, 41, 145, 205, 725, 1025, 1189, 1681, 5945, 8405, 29725, 42025, 48749, 243745, 1218725]

約数ペア:

[(1, 1218725), (5, 243745), (25, 48749), (29, 42025), (41, 29725), (145, 8405), (205, 5945), (725, 1681), (1025, 1189)]