4640840

素因数分解:

$2^3\times 5^1\times {\mathrm{181}}^1\times {\mathrm{641}}^1$

素因数の和:833

約数の個数: 32

約数和(自身を含む): 10515960

約数和(自身を除く): 5875120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 181, 362, 641, 724, 905, 1282, 1448, 1810, 2564, 3205, 3620, 5128, 6410, 7240, 12820, 25640, 116021, 232042, 464084, 580105, 928168, 1160210, 2320420, 4640840]

約数ペア:

[(1, 4640840), (2, 2320420), (4, 1160210), (5, 928168), (8, 580105), (10, 464084), (20, 232042), (40, 116021), (181, 25640), (362, 12820), (641, 7240), (724, 6410), (905, 5128), (1282, 3620), (1448, 3205), (1810, 2564)]