21759160

素因数分解:

$2^3\times 5^1\times {\mathrm{487}}^1\times {\mathrm{1117}}^1$

素因数の和:1615

約数の個数: 32

約数和(自身を含む): 49102560

約数和(自身を除く): 27343400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 487, 974, 1117, 1948, 2234, 2435, 3896, 4468, 4870, 5585, 8936, 9740, 11170, 19480, 22340, 44680, 543979, 1087958, 2175916, 2719895, 4351832, 5439790, 10879580, 21759160]

約数ペア:

[(1, 21759160), (2, 10879580), (4, 5439790), (5, 4351832), (8, 2719895), (10, 2175916), (20, 1087958), (40, 543979), (487, 44680), (974, 22340), (1117, 19480), (1948, 11170), (2234, 9740), (2435, 8936), (3896, 5585), (4468, 4870)]