18811040

素因数分解:

$2^5\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1321}}^1$

素因数の和:1425

約数の個数: 48

約数和(自身を含む): 44974440

約数和(自身を除く): 26163400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 89, 160, 178, 356, 445, 712, 890, 1321, 1424, 1780, 2642, 2848, 3560, 5284, 6605, 7120, 10568, 13210, 14240, 21136, 26420, 42272, 52840, 105680, 117569, 211360, 235138, 470276, 587845, 940552, 1175690, 1881104, 2351380, 3762208, 4702760, 9405520, 18811040]

約数ペア:

[(1, 18811040), (2, 9405520), (4, 4702760), (5, 3762208), (8, 2351380), (10, 1881104), (16, 1175690), (20, 940552), (32, 587845), (40, 470276), (80, 235138), (89, 211360), (160, 117569), (178, 105680), (356, 52840), (445, 42272), (712, 26420), (890, 21136), (1321, 14240), (1424, 13210), (1780, 10568), (2642, 7120), (2848, 6605), (3560, 5284)]