217442820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{517721}}^1$

素因数の和:517740

約数の個数: 48

約数和(自身を含む): 695818368

約数和(自身を除く): 478375548

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 517721, 1035442, 1553163, 2070884, 2588605, 3106326, 3624047, 5177210, 6212652, 7248094, 7765815, 10354420, 10872141, 14496188, 15531630, 18120235, 21744282, 31063260, 36240470, 43488564, 54360705, 72480940, 108721410, 217442820]

約数ペア:

[(1, 217442820), (2, 108721410), (3, 72480940), (4, 54360705), (5, 43488564), (6, 36240470), (7, 31063260), (10, 21744282), (12, 18120235), (14, 15531630), (15, 14496188), (20, 10872141), (21, 10354420), (28, 7765815), (30, 7248094), (35, 6212652), (42, 5177210), (60, 3624047), (70, 3106326), (84, 2588605), (105, 2070884), (140, 1553163), (210, 1035442), (420, 517721)]