21915975

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{17189}}^1$

素因数の和:17219

約数の個数: 24

約数和(自身を含む): 38368080

約数和(自身を除く): 16452105

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 255, 425, 1275, 17189, 51567, 85945, 257835, 292213, 429725, 876639, 1289175, 1461065, 4383195, 7305325, 21915975]

約数ペア:

[(1, 21915975), (3, 7305325), (5, 4383195), (15, 1461065), (17, 1289175), (25, 876639), (51, 429725), (75, 292213), (85, 257835), (255, 85945), (425, 51567), (1275, 17189)]