209641240

素因数分解:

$2^3\times 5^1\times {\mathrm{239}}^1\times {\mathrm{21929}}^1$

素因数の和:22179

約数の個数: 32

約数和(自身を含む): 473688000

約数和(自身を除く): 264046760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 239, 478, 956, 1195, 1912, 2390, 4780, 9560, 21929, 43858, 87716, 109645, 175432, 219290, 438580, 877160, 5241031, 10482062, 20964124, 26205155, 41928248, 52410310, 104820620, 209641240]

約数ペア:

[(1, 209641240), (2, 104820620), (4, 52410310), (5, 41928248), (8, 26205155), (10, 20964124), (20, 10482062), (40, 5241031), (239, 877160), (478, 438580), (956, 219290), (1195, 175432), (1912, 109645), (2390, 87716), (4780, 43858), (9560, 21929)]