21127806

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{73}}^1\times {\mathrm{2297}}^1$

素因数の和:2385

約数の個数: 48

約数和(自身を含む): 53056224

約数和(自身を除く): 31928418

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 73, 126, 146, 219, 438, 511, 657, 1022, 1314, 1533, 2297, 3066, 4594, 4599, 6891, 9198, 13782, 16079, 20673, 32158, 41346, 48237, 96474, 144711, 167681, 289422, 335362, 503043, 1006086, 1173767, 1509129, 2347534, 3018258, 3521301, 7042602, 10563903, 21127806]

約数ペア:

[(1, 21127806), (2, 10563903), (3, 7042602), (6, 3521301), (7, 3018258), (9, 2347534), (14, 1509129), (18, 1173767), (21, 1006086), (42, 503043), (63, 335362), (73, 289422), (126, 167681), (146, 144711), (219, 96474), (438, 48237), (511, 41346), (657, 32158), (1022, 20673), (1314, 16079), (1533, 13782), (2297, 9198), (3066, 6891), (4594, 4599)]