21003040

素因数分解:

$2^5\times 5^1\times {\mathrm{149}}^1\times {\mathrm{881}}^1$

素因数の和:1045

約数の個数: 48

約数和(自身を含む): 50009400

約数和(自身を除く): 29006360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 149, 160, 298, 596, 745, 881, 1192, 1490, 1762, 2384, 2980, 3524, 4405, 4768, 5960, 7048, 8810, 11920, 14096, 17620, 23840, 28192, 35240, 70480, 131269, 140960, 262538, 525076, 656345, 1050152, 1312690, 2100304, 2625380, 4200608, 5250760, 10501520, 21003040]

約数ペア:

[(1, 21003040), (2, 10501520), (4, 5250760), (5, 4200608), (8, 2625380), (10, 2100304), (16, 1312690), (20, 1050152), (32, 656345), (40, 525076), (80, 262538), (149, 140960), (160, 131269), (298, 70480), (596, 35240), (745, 28192), (881, 23840), (1192, 17620), (1490, 14096), (1762, 11920), (2384, 8810), (2980, 7048), (3524, 5960), (4405, 4768)]