17980060

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{2621}}^1$

素因数の和:2651

約数の個数: 48

約数和(自身を含む): 44049600

約数和(自身を除く): 26069540

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 490, 686, 980, 1372, 1715, 2621, 3430, 5242, 6860, 10484, 13105, 18347, 26210, 36694, 52420, 73388, 91735, 128429, 183470, 256858, 366940, 513716, 642145, 899003, 1284290, 1798006, 2568580, 3596012, 4495015, 8990030, 17980060]

約数ペア:

[(1, 17980060), (2, 8990030), (4, 4495015), (5, 3596012), (7, 2568580), (10, 1798006), (14, 1284290), (20, 899003), (28, 642145), (35, 513716), (49, 366940), (70, 256858), (98, 183470), (140, 128429), (196, 91735), (245, 73388), (343, 52420), (490, 36694), (686, 26210), (980, 18347), (1372, 13105), (1715, 10484), (2621, 6860), (3430, 5242)]