21009045

素因数分解:

$3^1\times 5^1\times {\mathrm{191}}^1\times {\mathrm{7333}}^1$

素因数の和:7532

約数の個数: 16

約数和(自身を含む): 33795072

約数和(自身を除く): 12786027

約数列:

[1, 3, 5, 15, 191, 573, 955, 2865, 7333, 21999, 36665, 109995, 1400603, 4201809, 7003015, 21009045]

約数ペア:

[(1, 21009045), (3, 7003015), (5, 4201809), (15, 1400603), (191, 109995), (573, 36665), (955, 21999), (2865, 7333)]