21422745

素因数分解:

$3^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1783}}^1$

素因数の和:1886

約数の個数: 32

約数和(自身を含む): 38534400

約数和(自身を除く): 17111655

約数列:

[1, 3, 5, 9, 15, 27, 45, 89, 135, 267, 445, 801, 1335, 1783, 2403, 4005, 5349, 8915, 12015, 16047, 26745, 48141, 80235, 158687, 240705, 476061, 793435, 1428183, 2380305, 4284549, 7140915, 21422745]

約数ペア:

[(1, 21422745), (3, 7140915), (5, 4284549), (9, 2380305), (15, 1428183), (27, 793435), (45, 476061), (89, 240705), (135, 158687), (267, 80235), (445, 48141), (801, 26745), (1335, 16047), (1783, 12015), (2403, 8915), (4005, 5349)]