40217900

素因数分解:

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

素因数の和:303

約数の個数: 72

約数和(自身を含む): 91660800

約数和(自身を除く): 51442900

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 47, 50, 86, 94, 100, 172, 188, 199, 215, 235, 398, 430, 470, 796, 860, 940, 995, 1075, 1175, 1990, 2021, 2150, 2350, 3980, 4042, 4300, 4700, 4975, 8084, 8557, 9353, 9950, 10105, 17114, 18706, 19900, 20210, 34228, 37412, 40420, 42785, 46765, 50525, 85570, 93530, 101050, 171140, 187060, 202100, 213925, 233825, 402179, 427850, 467650, 804358, 855700, 935300, 1608716, 2010895, 4021790, 8043580, 10054475, 20108950, 40217900]

約数ペア:

[(1, 40217900), (2, 20108950), (4, 10054475), (5, 8043580), (10, 4021790), (20, 2010895), (25, 1608716), (43, 935300), (47, 855700), (50, 804358), (86, 467650), (94, 427850), (100, 402179), (172, 233825), (188, 213925), (199, 202100), (215, 187060), (235, 171140), (398, 101050), (430, 93530), (470, 85570), (796, 50525), (860, 46765), (940, 42785), (995, 40420), (1075, 37412), (1175, 34228), (1990, 20210), (2021, 19900), (2150, 18706), (2350, 17114), (3980, 10105), (4042, 9950), (4300, 9353), (4700, 8557), (4975, 8084)]