21840063

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{431}}^1$

素因数の和:587

約数の個数: 32

約数和(自身を含む): 35389440

約数和(自身を除く): 13549377

約数列:

[1, 3, 7, 19, 21, 57, 127, 133, 381, 399, 431, 889, 1293, 2413, 2667, 3017, 7239, 8189, 9051, 16891, 24567, 50673, 54737, 57323, 164211, 171969, 383159, 1040003, 1149477, 3120009, 7280021, 21840063]

約数ペア:

[(1, 21840063), (3, 7280021), (7, 3120009), (19, 1149477), (21, 1040003), (57, 383159), (127, 171969), (133, 164211), (381, 57323), (399, 54737), (431, 50673), (889, 24567), (1293, 16891), (2413, 9051), (2667, 8189), (3017, 7239)]