20973325

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{809}}^1$

素因数の和:897

約数の個数: 24

約数和(自身を含む): 28022760

約数和(自身を除く): 7049435

約数列:

[1, 5, 17, 25, 61, 85, 305, 425, 809, 1037, 1525, 4045, 5185, 13753, 20225, 25925, 49349, 68765, 246745, 343825, 838933, 1233725, 4194665, 20973325]

約数ペア:

[(1, 20973325), (5, 4194665), (17, 1233725), (25, 838933), (61, 343825), (85, 246745), (305, 68765), (425, 49349), (809, 25925), (1037, 20225), (1525, 13753), (4045, 5185)]