820771918

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{311}}^1\times {\mathrm{349}}^1$

素因数の和:880

約数の個数: 32

約数和(自身を含む): 1310400000

約数和(自身を除く): 489628082

約数列:

[1, 2, 19, 38, 199, 311, 349, 398, 622, 698, 3781, 5909, 6631, 7562, 11818, 13262, 61889, 69451, 108539, 123778, 138902, 217078, 1175891, 1319569, 2062241, 2351782, 2639138, 4124482, 21599261, 43198522, 410385959, 820771918]

約数ペア:

[(1, 820771918), (2, 410385959), (19, 43198522), (38, 21599261), (199, 4124482), (311, 2639138), (349, 2351782), (398, 2062241), (622, 1319569), (698, 1175891), (3781, 217078), (5909, 138902), (6631, 123778), (7562, 108539), (11818, 69451), (13262, 61889)]