20120345

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{461}}^1$

素因数の和:545

約数の個数: 32

約数和(自身を含む): 29272320

約数和(自身を除く): 9151975

約数列:

[1, 5, 7, 29, 35, 43, 145, 203, 215, 301, 461, 1015, 1247, 1505, 2305, 3227, 6235, 8729, 13369, 16135, 19823, 43645, 66845, 93583, 99115, 138761, 467915, 574867, 693805, 2874335, 4024069, 20120345]

約数ペア:

[(1, 20120345), (5, 4024069), (7, 2874335), (29, 693805), (35, 574867), (43, 467915), (145, 138761), (203, 99115), (215, 93583), (301, 66845), (461, 43645), (1015, 19823), (1247, 16135), (1505, 13369), (2305, 8729), (3227, 6235)]