20165681781

素因数分解:

$3^3\times 7^1\times {\mathrm{157}}^1\times {\mathrm{679597}}^1$

素因数の和:679770

約数の個数: 32

約数和(自身を含む): 34360474880

約数和(自身を除く): 14194793099

約数列:

[1, 3, 7, 9, 21, 27, 63, 157, 189, 471, 1099, 1413, 3297, 4239, 9891, 29673, 679597, 2038791, 4757179, 6116373, 14271537, 18349119, 42814611, 106696729, 128443833, 320090187, 746877103, 960270561, 2240631309, 2880811683, 6721893927, 20165681781]

約数ペア:

[(1, 20165681781), (3, 6721893927), (7, 2880811683), (9, 2240631309), (21, 960270561), (27, 746877103), (63, 320090187), (157, 128443833), (189, 106696729), (471, 42814611), (1099, 18349119), (1413, 14271537), (3297, 6116373), (4239, 4757179), (9891, 2038791), (29673, 679597)]