999808220

素因数分解:

$2^2\times 5^1\times {\mathrm{349}}^1\times {\mathrm{143239}}^1$

素因数の和:143597

約数の個数: 24

約数和(自身を含む): 2105628000

約数和(自身を除く): 1105819780

約数列:

[1, 2, 4, 5, 10, 20, 349, 698, 1396, 1745, 3490, 6980, 143239, 286478, 572956, 716195, 1432390, 2864780, 49990411, 99980822, 199961644, 249952055, 499904110, 999808220]

約数ペア:

[(1, 999808220), (2, 499904110), (4, 249952055), (5, 199961644), (10, 99980822), (20, 49990411), (349, 2864780), (698, 1432390), (1396, 716195), (1745, 572956), (3490, 286478), (6980, 143239)]