20405640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{170047}}^1$

素因数の和:170061

約数の個数: 32

約数和(自身を含む): 61217280

約数和(自身を除く): 40811640

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 170047, 340094, 510141, 680188, 850235, 1020282, 1360376, 1700470, 2040564, 2550705, 3400940, 4081128, 5101410, 6801880, 10202820, 20405640]

約数ペア:

[(1, 20405640), (2, 10202820), (3, 6801880), (4, 5101410), (5, 4081128), (6, 3400940), (8, 2550705), (10, 2040564), (12, 1700470), (15, 1360376), (20, 1020282), (24, 850235), (30, 680188), (40, 510141), (60, 340094), (120, 170047)]