18454940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{2161}}^1$

素因数の和:2238

約数の個数: 48

約数和(自身を含む): 45038784

約数和(自身を除く): 26583844

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 61, 70, 122, 140, 244, 305, 427, 610, 854, 1220, 1708, 2135, 2161, 4270, 4322, 8540, 8644, 10805, 15127, 21610, 30254, 43220, 60508, 75635, 131821, 151270, 263642, 302540, 527284, 659105, 922747, 1318210, 1845494, 2636420, 3690988, 4613735, 9227470, 18454940]

約数ペア:

[(1, 18454940), (2, 9227470), (4, 4613735), (5, 3690988), (7, 2636420), (10, 1845494), (14, 1318210), (20, 922747), (28, 659105), (35, 527284), (61, 302540), (70, 263642), (122, 151270), (140, 131821), (244, 75635), (305, 60508), (427, 43220), (610, 30254), (854, 21610), (1220, 15127), (1708, 10805), (2135, 8644), (2161, 8540), (4270, 4322)]