19059664

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{2131}}^1$

素因数の和:2195

約数の個数: 40

約数和(自身を含む): 40712672

約数和(自身を除く): 21653008

約数列:

[1, 2, 4, 8, 13, 16, 26, 43, 52, 86, 104, 172, 208, 344, 559, 688, 1118, 2131, 2236, 4262, 4472, 8524, 8944, 17048, 27703, 34096, 55406, 91633, 110812, 183266, 221624, 366532, 443248, 733064, 1191229, 1466128, 2382458, 4764916, 9529832, 19059664]

約数ペア:

[(1, 19059664), (2, 9529832), (4, 4764916), (8, 2382458), (13, 1466128), (16, 1191229), (26, 733064), (43, 443248), (52, 366532), (86, 221624), (104, 183266), (172, 110812), (208, 91633), (344, 55406), (559, 34096), (688, 27703), (1118, 17048), (2131, 8944), (2236, 8524), (4262, 4472)]