21820077

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{857}}^1$

素因数の和:930

約数の個数: 32

約数和(自身を含む): 34594560

約数和(自身を除く): 12774483

約数列:

[1, 3, 9, 23, 27, 41, 69, 123, 207, 369, 621, 857, 943, 1107, 2571, 2829, 7713, 8487, 19711, 23139, 25461, 35137, 59133, 105411, 177399, 316233, 532197, 808151, 948699, 2424453, 7273359, 21820077]

約数ペア:

[(1, 21820077), (3, 7273359), (9, 2424453), (23, 948699), (27, 808151), (41, 532197), (69, 316233), (123, 177399), (207, 105411), (369, 59133), (621, 35137), (857, 25461), (943, 23139), (1107, 19711), (2571, 8487), (2829, 7713)]