19998283528

素因数分解:

$2^3\times {\mathrm{163}}^1\times {\mathrm{349}}^1\times {\mathrm{43943}}^1$

素因数の和:44461

約数の個数: 32

約数和(自身を含む): 37835784000

約数和(自身を除く): 17837500472

約数列:

[1, 2, 4, 8, 163, 326, 349, 652, 698, 1304, 1396, 2792, 43943, 56887, 87886, 113774, 175772, 227548, 351544, 455096, 7162709, 14325418, 15336107, 28650836, 30672214, 57301672, 61344428, 122688856, 2499785441, 4999570882, 9999141764, 19998283528]

約数ペア:

[(1, 19998283528), (2, 9999141764), (4, 4999570882), (8, 2499785441), (163, 122688856), (326, 61344428), (349, 57301672), (652, 30672214), (698, 28650836), (1304, 15336107), (1396, 14325418), (2792, 7162709), (43943, 455096), (56887, 351544), (87886, 227548), (113774, 175772)]