21801225

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{17099}}^1$

素因数の和:17129

約数の個数: 24

約数和(自身を含む): 38167200

約数和(自身を除く): 16365975

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 255, 425, 1275, 17099, 51297, 85495, 256485, 290683, 427475, 872049, 1282425, 1453415, 4360245, 7267075, 21801225]

約数ペア:

[(1, 21801225), (3, 7267075), (5, 4360245), (15, 1453415), (17, 1282425), (25, 872049), (51, 427475), (75, 290683), (85, 256485), (255, 85495), (425, 51297), (1275, 17099)]