399338925

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{313207}}^1$

素因数の和:313237

約数の個数: 24

約数和(自身を含む): 699080256

約数和(自身を除く): 299741331

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 255, 425, 1275, 313207, 939621, 1566035, 4698105, 5324519, 7830175, 15973557, 23490525, 26622595, 79867785, 133112975, 399338925]

約数ペア:

[(1, 399338925), (3, 133112975), (5, 79867785), (15, 26622595), (17, 23490525), (25, 15973557), (51, 7830175), (75, 5324519), (85, 4698105), (255, 1566035), (425, 939621), (1275, 313207)]