15991475

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{191}}^1\times {\mathrm{197}}^1$

素因数の和:415

約数の個数: 24

約数和(自身を含む): 21212928

約数和(自身を除く): 5221453

約数列:

[1, 5, 17, 25, 85, 191, 197, 425, 955, 985, 3247, 3349, 4775, 4925, 16235, 16745, 37627, 81175, 83725, 188135, 639659, 940675, 3198295, 15991475]

約数ペア:

[(1, 15991475), (5, 3198295), (17, 940675), (25, 639659), (85, 188135), (191, 83725), (197, 81175), (425, 37627), (955, 16745), (985, 16235), (3247, 4925), (3349, 4775)]