20987213900

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{6770069}}^1$

素因数の和:6770114

約数の個数: 36

約数和(自身を含む): 47011366080

約数和(自身を除く): 26024152180

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 100, 124, 155, 310, 620, 775, 1550, 3100, 6770069, 13540138, 27080276, 33850345, 67700690, 135401380, 169251725, 209872139, 338503450, 419744278, 677006900, 839488556, 1049360695, 2098721390, 4197442780, 5246803475, 10493606950, 20987213900]

約数ペア:

[(1, 20987213900), (2, 10493606950), (4, 5246803475), (5, 4197442780), (10, 2098721390), (20, 1049360695), (25, 839488556), (31, 677006900), (50, 419744278), (62, 338503450), (100, 209872139), (124, 169251725), (155, 135401380), (310, 67700690), (620, 33850345), (775, 27080276), (1550, 13540138), (3100, 6770069)]