21279650

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{163}}^1\times {\mathrm{373}}^1$

素因数の和:555

約数の個数: 48

約数和(自身を含む): 45633984

約数和(自身を除く): 24354334

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 70, 163, 175, 326, 350, 373, 746, 815, 1141, 1630, 1865, 2282, 2611, 3730, 4075, 5222, 5705, 8150, 9325, 11410, 13055, 18650, 26110, 28525, 57050, 60799, 65275, 121598, 130550, 303995, 425593, 607990, 851186, 1519975, 2127965, 3039950, 4255930, 10639825, 21279650]

約数ペア:

[(1, 21279650), (2, 10639825), (5, 4255930), (7, 3039950), (10, 2127965), (14, 1519975), (25, 851186), (35, 607990), (50, 425593), (70, 303995), (163, 130550), (175, 121598), (326, 65275), (350, 60799), (373, 57050), (746, 28525), (815, 26110), (1141, 18650), (1630, 13055), (1865, 11410), (2282, 9325), (2611, 8150), (3730, 5705), (4075, 5222)]