21297003

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{431}}^1$

素因数の和:635

約数の個数: 32

約数和(自身を含む): 35223552

約数和(自身を除く): 13926549

約数列:

[1, 3, 7, 13, 21, 39, 91, 181, 273, 431, 543, 1267, 1293, 2353, 3017, 3801, 5603, 7059, 9051, 16471, 16809, 39221, 49413, 78011, 117663, 234033, 546077, 1014143, 1638231, 3042429, 7099001, 21297003]

約数ペア:

[(1, 21297003), (3, 7099001), (7, 3042429), (13, 1638231), (21, 1014143), (39, 546077), (91, 234033), (181, 117663), (273, 78011), (431, 49413), (543, 39221), (1267, 16809), (1293, 16471), (2353, 9051), (3017, 7059), (3801, 5603)]