21811245

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{191}}^1\times {\mathrm{331}}^1$

素因数の和:553

約数の個数: 32

約数和(自身を含む): 36716544

約数和(自身を除く): 14905299

約数列:

[1, 3, 5, 15, 23, 69, 115, 191, 331, 345, 573, 955, 993, 1655, 2865, 4393, 4965, 7613, 13179, 21965, 22839, 38065, 63221, 65895, 114195, 189663, 316105, 948315, 1454083, 4362249, 7270415, 21811245]

約数ペア:

[(1, 21811245), (3, 7270415), (5, 4362249), (15, 1454083), (23, 948315), (69, 316105), (115, 189663), (191, 114195), (331, 65895), (345, 63221), (573, 38065), (955, 22839), (993, 21965), (1655, 13179), (2865, 7613), (4393, 4965)]