1820020

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{101}}^1$

素因数の和:180

約数の個数: 48

約数和(自身を含む): 4164048

約数和(自身を除く): 2344028

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 53, 68, 85, 101, 106, 170, 202, 212, 265, 340, 404, 505, 530, 901, 1010, 1060, 1717, 1802, 2020, 3434, 3604, 4505, 5353, 6868, 8585, 9010, 10706, 17170, 18020, 21412, 26765, 34340, 53530, 91001, 107060, 182002, 364004, 455005, 910010, 1820020]

約数ペア:

[(1, 1820020), (2, 910010), (4, 455005), (5, 364004), (10, 182002), (17, 107060), (20, 91001), (34, 53530), (53, 34340), (68, 26765), (85, 21412), (101, 18020), (106, 17170), (170, 10706), (202, 9010), (212, 8585), (265, 6868), (340, 5353), (404, 4505), (505, 3604), (530, 3434), (901, 2020), (1010, 1802), (1060, 1717)]