19453750

素因数分解:

$2^1\times 5^4\times {\mathrm{79}}^1\times {\mathrm{197}}^1$

素因数の和:298

約数の個数: 40

約数和(自身を含む): 37113120

約数和(自身を除く): 17659370

約数列:

[1, 2, 5, 10, 25, 50, 79, 125, 158, 197, 250, 394, 395, 625, 790, 985, 1250, 1970, 1975, 3950, 4925, 9850, 9875, 15563, 19750, 24625, 31126, 49250, 49375, 77815, 98750, 123125, 155630, 246250, 389075, 778150, 1945375, 3890750, 9726875, 19453750]

約数ペア:

[(1, 19453750), (2, 9726875), (5, 3890750), (10, 1945375), (25, 778150), (50, 389075), (79, 246250), (125, 155630), (158, 123125), (197, 98750), (250, 77815), (394, 49375), (395, 49250), (625, 31126), (790, 24625), (985, 19750), (1250, 15563), (1970, 9875), (1975, 9850), (3950, 4925)]