18922720

素因数分解:

$2^5\times 5^1\times {\mathrm{227}}^1\times {\mathrm{521}}^1$

素因数の和:763

約数の個数: 48

約数和(自身を含む): 44988048

約数和(自身を除く): 26065328

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 227, 454, 521, 908, 1042, 1135, 1816, 2084, 2270, 2605, 3632, 4168, 4540, 5210, 7264, 8336, 9080, 10420, 16672, 18160, 20840, 36320, 41680, 83360, 118267, 236534, 473068, 591335, 946136, 1182670, 1892272, 2365340, 3784544, 4730680, 9461360, 18922720]

約数ペア:

[(1, 18922720), (2, 9461360), (4, 4730680), (5, 3784544), (8, 2365340), (10, 1892272), (16, 1182670), (20, 946136), (32, 591335), (40, 473068), (80, 236534), (160, 118267), (227, 83360), (454, 41680), (521, 36320), (908, 20840), (1042, 18160), (1135, 16672), (1816, 10420), (2084, 9080), (2270, 8336), (2605, 7264), (3632, 5210), (4168, 4540)]