20641179

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{191}}^1$

素因数の和:387

約数の個数: 32

約数和(自身を含む): 31739904

約数和(自身を除く): 11098725

約数列:

[1, 3, 13, 17, 39, 51, 163, 191, 221, 489, 573, 663, 2119, 2483, 2771, 3247, 6357, 7449, 8313, 9741, 31133, 36023, 42211, 93399, 108069, 126633, 404729, 529261, 1214187, 1587783, 6880393, 20641179]

約数ペア:

[(1, 20641179), (3, 6880393), (13, 1587783), (17, 1214187), (39, 529261), (51, 404729), (163, 126633), (191, 108069), (221, 93399), (489, 42211), (573, 36023), (663, 31133), (2119, 9741), (2483, 8313), (2771, 7449), (3247, 6357)]