21999270

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31883}}^1$

素因数の和:31916

約数の個数: 32

約数和(自身を含む): 55095552

約数和(自身を除く): 33096282

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690, 31883, 63766, 95649, 159415, 191298, 318830, 478245, 733309, 956490, 1466618, 2199927, 3666545, 4399854, 7333090, 10999635, 21999270]

約数ペア:

[(1, 21999270), (2, 10999635), (3, 7333090), (5, 4399854), (6, 3666545), (10, 2199927), (15, 1466618), (23, 956490), (30, 733309), (46, 478245), (69, 318830), (115, 191298), (138, 159415), (230, 95649), (345, 63766), (690, 31883)]