21093435

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{991}}^1$

素因数の和:1056

約数の個数: 48

約数和(自身を含む): 40854528

約数和(自身を除く): 19761093

約数列:

[1, 3, 5, 9, 11, 15, 33, 43, 45, 55, 99, 129, 165, 215, 387, 473, 495, 645, 991, 1419, 1935, 2365, 2973, 4257, 4955, 7095, 8919, 10901, 14865, 21285, 32703, 42613, 44595, 54505, 98109, 127839, 163515, 213065, 383517, 468743, 490545, 639195, 1406229, 1917585, 2343715, 4218687, 7031145, 21093435]

約数ペア:

[(1, 21093435), (3, 7031145), (5, 4218687), (9, 2343715), (11, 1917585), (15, 1406229), (33, 639195), (43, 490545), (45, 468743), (55, 383517), (99, 213065), (129, 163515), (165, 127839), (215, 98109), (387, 54505), (473, 44595), (495, 42613), (645, 32703), (991, 21285), (1419, 14865), (1935, 10901), (2365, 8919), (2973, 7095), (4257, 4955)]