18976040

素因数分解:

$2^3\times 5^1\times {\mathrm{181}}^1\times {\mathrm{2621}}^1$

素因数の和:2813

約数の個数: 32

約数和(自身を含む): 42948360

約数和(自身を除く): 23972320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 181, 362, 724, 905, 1448, 1810, 2621, 3620, 5242, 7240, 10484, 13105, 20968, 26210, 52420, 104840, 474401, 948802, 1897604, 2372005, 3795208, 4744010, 9488020, 18976040]

約数ペア:

[(1, 18976040), (2, 9488020), (4, 4744010), (5, 3795208), (8, 2372005), (10, 1897604), (20, 948802), (40, 474401), (181, 104840), (362, 52420), (724, 26210), (905, 20968), (1448, 13105), (1810, 10484), (2621, 7240), (3620, 5242)]