21130192

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{857}}^1$

素因数の和:955

約数の個数: 40

約数和(自身を含む): 43407936

約数和(自身を除く): 22277744

約数列:

[1, 2, 4, 8, 16, 23, 46, 67, 92, 134, 184, 268, 368, 536, 857, 1072, 1541, 1714, 3082, 3428, 6164, 6856, 12328, 13712, 19711, 24656, 39422, 57419, 78844, 114838, 157688, 229676, 315376, 459352, 918704, 1320637, 2641274, 5282548, 10565096, 21130192]

約数ペア:

[(1, 21130192), (2, 10565096), (4, 5282548), (8, 2641274), (16, 1320637), (23, 918704), (46, 459352), (67, 315376), (92, 229676), (134, 157688), (184, 114838), (268, 78844), (368, 57419), (536, 39422), (857, 24656), (1072, 19711), (1541, 13712), (1714, 12328), (3082, 6856), (3428, 6164)]