20108950

素因数分解:

$2^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{199}}^1$

素因数の和:301

約数の個数: 48

約数和(自身を含む): 39283200

約数和(自身を除く): 19174250

約数列:

[1, 2, 5, 10, 25, 43, 47, 50, 86, 94, 199, 215, 235, 398, 430, 470, 995, 1075, 1175, 1990, 2021, 2150, 2350, 4042, 4975, 8557, 9353, 9950, 10105, 17114, 18706, 20210, 42785, 46765, 50525, 85570, 93530, 101050, 213925, 233825, 402179, 427850, 467650, 804358, 2010895, 4021790, 10054475, 20108950]

約数ペア:

[(1, 20108950), (2, 10054475), (5, 4021790), (10, 2010895), (25, 804358), (43, 467650), (47, 427850), (50, 402179), (86, 233825), (94, 213925), (199, 101050), (215, 93530), (235, 85570), (398, 50525), (430, 46765), (470, 42785), (995, 20210), (1075, 18706), (1175, 17114), (1990, 10105), (2021, 9950), (2150, 9353), (2350, 8557), (4042, 4975)]