21209325

素因数分解:

$3^1\times 5^2\times {\mathrm{37}}^1\times {\mathrm{7643}}^1$

素因数の和:7693

約数の個数: 24

約数和(自身を含む): 36018528

約数和(自身を除く): 14809203

約数列:

[1, 3, 5, 15, 25, 37, 75, 111, 185, 555, 925, 2775, 7643, 22929, 38215, 114645, 191075, 282791, 573225, 848373, 1413955, 4241865, 7069775, 21209325]

約数ペア:

[(1, 21209325), (3, 7069775), (5, 4241865), (15, 1413955), (25, 848373), (37, 573225), (75, 282791), (111, 191075), (185, 114645), (555, 38215), (925, 22929), (2775, 7643)]