19780090

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{179819}}^1$

素因数の和:179837

約数の個数: 16

約数和(自身を含む): 38841120

約数和(自身を除く): 19061030

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 179819, 359638, 899095, 1798190, 1978009, 3956018, 9890045, 19780090]

約数ペア:

[(1, 19780090), (2, 9890045), (5, 3956018), (10, 1978009), (11, 1798190), (22, 899095), (55, 359638), (110, 179819)]