19903090

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^2\times {\mathrm{53}}^1$

素因数の和:171

約数の個数: 48

約数和(自身を含む): 39488472

約数和(自身を除く): 19585382

約数列:

[1, 2, 5, 10, 17, 34, 47, 53, 85, 94, 106, 170, 235, 265, 470, 530, 799, 901, 1598, 1802, 2209, 2491, 3995, 4418, 4505, 4982, 7990, 9010, 11045, 12455, 22090, 24910, 37553, 42347, 75106, 84694, 117077, 187765, 211735, 234154, 375530, 423470, 585385, 1170770, 1990309, 3980618, 9951545, 19903090]

約数ペア:

[(1, 19903090), (2, 9951545), (5, 3980618), (10, 1990309), (17, 1170770), (34, 585385), (47, 423470), (53, 375530), (85, 234154), (94, 211735), (106, 187765), (170, 117077), (235, 84694), (265, 75106), (470, 42347), (530, 37553), (799, 24910), (901, 22090), (1598, 12455), (1802, 11045), (2209, 9010), (2491, 7990), (3995, 4982), (4418, 4505)]