21017318

素因数分解:

$2^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{613}}^1$

素因数の和:732

約数の個数: 32

約数和(自身を含む): 37724160

約数和(自身を除く): 16706842

約数列:

[1, 2, 7, 14, 31, 62, 79, 158, 217, 434, 553, 613, 1106, 1226, 2449, 4291, 4898, 8582, 17143, 19003, 34286, 38006, 48427, 96854, 133021, 266042, 338989, 677978, 1501237, 3002474, 10508659, 21017318]

約数ペア:

[(1, 21017318), (2, 10508659), (7, 3002474), (14, 1501237), (31, 677978), (62, 338989), (79, 266042), (158, 133021), (217, 96854), (434, 48427), (553, 38006), (613, 34286), (1106, 19003), (1226, 17143), (2449, 8582), (4291, 4898)]