21908500

素因数分解:

$2^2\times 5^3\times {\mathrm{43}}^1\times {\mathrm{1019}}^1$

素因数の和:1081

約数の個数: 48

約数和(自身を含む): 49008960

約数和(自身を除く): 27100460

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 125, 172, 215, 250, 430, 500, 860, 1019, 1075, 2038, 2150, 4076, 4300, 5095, 5375, 10190, 10750, 20380, 21500, 25475, 43817, 50950, 87634, 101900, 127375, 175268, 219085, 254750, 438170, 509500, 876340, 1095425, 2190850, 4381700, 5477125, 10954250, 21908500]

約数ペア:

[(1, 21908500), (2, 10954250), (4, 5477125), (5, 4381700), (10, 2190850), (20, 1095425), (25, 876340), (43, 509500), (50, 438170), (86, 254750), (100, 219085), (125, 175268), (172, 127375), (215, 101900), (250, 87634), (430, 50950), (500, 43817), (860, 25475), (1019, 21500), (1075, 20380), (2038, 10750), (2150, 10190), (4076, 5375), (4300, 5095)]