21678246

素因数分解:

$2^1\times 3^3\times {\mathrm{157}}^1\times {\mathrm{2557}}^1$

素因数の和:2725

約数の個数: 32

約数和(自身を含む): 48499680

約数和(自身を除く): 26821434

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 157, 314, 471, 942, 1413, 2557, 2826, 4239, 5114, 7671, 8478, 15342, 23013, 46026, 69039, 138078, 401449, 802898, 1204347, 2408694, 3613041, 7226082, 10839123, 21678246]

約数ペア:

[(1, 21678246), (2, 10839123), (3, 7226082), (6, 3613041), (9, 2408694), (18, 1204347), (27, 802898), (54, 401449), (157, 138078), (314, 69039), (471, 46026), (942, 23013), (1413, 15342), (2557, 8478), (2826, 7671), (4239, 5114)]