21591135

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^2\times {\mathrm{907}}^1$

素因数の和:964

約数の個数: 36

約数和(自身を含む): 39165672

約数和(自身を除く): 17574537

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 115, 207, 345, 529, 907, 1035, 1587, 2645, 2721, 4535, 4761, 7935, 8163, 13605, 20861, 23805, 40815, 62583, 104305, 187749, 312915, 479803, 938745, 1439409, 2399015, 4318227, 7197045, 21591135]

約数ペア:

[(1, 21591135), (3, 7197045), (5, 4318227), (9, 2399015), (15, 1439409), (23, 938745), (45, 479803), (69, 312915), (115, 187749), (207, 104305), (345, 62583), (529, 40815), (907, 23805), (1035, 20861), (1587, 13605), (2645, 8163), (2721, 7935), (4535, 4761)]