21997035

素因数分解:

$3^3\times 5^1\times {\mathrm{127}}^1\times {\mathrm{1283}}^1$

素因数の和:1424

約数の個数: 32

約数和(自身を含む): 39444480

約数和(自身を除く): 17447445

約数列:

[1, 3, 5, 9, 15, 27, 45, 127, 135, 381, 635, 1143, 1283, 1905, 3429, 3849, 5715, 6415, 11547, 17145, 19245, 34641, 57735, 162941, 173205, 488823, 814705, 1466469, 2444115, 4399407, 7332345, 21997035]

約数ペア:

[(1, 21997035), (3, 7332345), (5, 4399407), (9, 2444115), (15, 1466469), (27, 814705), (45, 488823), (127, 173205), (135, 162941), (381, 57735), (635, 34641), (1143, 19245), (1283, 17145), (1905, 11547), (3429, 6415), (3849, 5715)]