9919975

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{233}}^1$

素因数の和:387

約数の個数: 24

約数和(自身を含む): 13405392

約数和(自身を除く): 3485417

約数列:

[1, 5, 13, 25, 65, 131, 233, 325, 655, 1165, 1703, 3029, 3275, 5825, 8515, 15145, 30523, 42575, 75725, 152615, 396799, 763075, 1983995, 9919975]

約数ペア:

[(1, 9919975), (5, 1983995), (13, 763075), (25, 396799), (65, 152615), (131, 75725), (233, 42575), (325, 30523), (655, 15145), (1165, 8515), (1703, 5825), (3029, 3275)]