19910450

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{163}}^1\times {\mathrm{349}}^1$

素因数の和:531

約数の個数: 48

約数和(自身を含む): 42705600

約数和(自身を除く): 22795150

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 70, 163, 175, 326, 349, 350, 698, 815, 1141, 1630, 1745, 2282, 2443, 3490, 4075, 4886, 5705, 8150, 8725, 11410, 12215, 17450, 24430, 28525, 56887, 57050, 61075, 113774, 122150, 284435, 398209, 568870, 796418, 1422175, 1991045, 2844350, 3982090, 9955225, 19910450]

約数ペア:

[(1, 19910450), (2, 9955225), (5, 3982090), (7, 2844350), (10, 1991045), (14, 1422175), (25, 796418), (35, 568870), (50, 398209), (70, 284435), (163, 122150), (175, 113774), (326, 61075), (349, 57050), (350, 56887), (698, 28525), (815, 24430), (1141, 17450), (1630, 12215), (1745, 11410), (2282, 8725), (2443, 8150), (3490, 5705), (4075, 4886)]