20447290

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{929}}^1$

素因数の和:1038

約数の個数: 32

約数和(自身を含む): 38568960

約数和(自身を除く): 18121670

約数列:

[1, 2, 5, 10, 31, 62, 71, 142, 155, 310, 355, 710, 929, 1858, 2201, 4402, 4645, 9290, 11005, 22010, 28799, 57598, 65959, 131918, 143995, 287990, 329795, 659590, 2044729, 4089458, 10223645, 20447290]

約数ペア:

[(1, 20447290), (2, 10223645), (5, 4089458), (10, 2044729), (31, 659590), (62, 329795), (71, 287990), (142, 143995), (155, 131918), (310, 65959), (355, 57598), (710, 28799), (929, 22010), (1858, 11005), (2201, 9290), (4402, 4645)]