18205725

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{131}}^1$

素因数の和:270

約数の個数: 48

約数和(自身を含む): 32408640

約数和(自身を除く): 14202915

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 109, 131, 255, 327, 393, 425, 545, 655, 1275, 1635, 1853, 1965, 2227, 2725, 3275, 5559, 6681, 8175, 9265, 9825, 11135, 14279, 27795, 33405, 42837, 46325, 55675, 71395, 138975, 167025, 214185, 242743, 356975, 728229, 1070925, 1213715, 3641145, 6068575, 18205725]

約数ペア:

[(1, 18205725), (3, 6068575), (5, 3641145), (15, 1213715), (17, 1070925), (25, 728229), (51, 356975), (75, 242743), (85, 214185), (109, 167025), (131, 138975), (255, 71395), (327, 55675), (393, 46325), (425, 42837), (545, 33405), (655, 27795), (1275, 14279), (1635, 11135), (1853, 9825), (1965, 9265), (2227, 8175), (2725, 6681), (3275, 5559)]