215422475

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{199}}^1$

素因数の和:324

約数の個数: 48

約数和(自身を含む): 294624000

約数和(自身を除く): 79201525

約数列:

[1, 5, 19, 25, 43, 53, 95, 199, 215, 265, 475, 817, 995, 1007, 1075, 1325, 2279, 3781, 4085, 4975, 5035, 8557, 10547, 11395, 18905, 20425, 25175, 42785, 43301, 52735, 56975, 94525, 162583, 200393, 213925, 216505, 263675, 453521, 812915, 1001965, 1082525, 2267605, 4064575, 5009825, 8616899, 11338025, 43084495, 215422475]

約数ペア:

[(1, 215422475), (5, 43084495), (19, 11338025), (25, 8616899), (43, 5009825), (53, 4064575), (95, 2267605), (199, 1082525), (215, 1001965), (265, 812915), (475, 453521), (817, 263675), (995, 216505), (1007, 213925), (1075, 200393), (1325, 162583), (2279, 94525), (3781, 56975), (4085, 52735), (4975, 43301), (5035, 42785), (8557, 25175), (10547, 20425), (11395, 18905)]