21262990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{3413}}^1$

素因数の和:3516

約数の個数: 32

約数和(自身を含む): 44245440

約数和(自身を除く): 22982450

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 89, 178, 445, 623, 890, 1246, 3115, 3413, 6230, 6826, 17065, 23891, 34130, 47782, 119455, 238910, 303757, 607514, 1518785, 2126299, 3037570, 4252598, 10631495, 21262990]

約数ペア:

[(1, 21262990), (2, 10631495), (5, 4252598), (7, 3037570), (10, 2126299), (14, 1518785), (35, 607514), (70, 303757), (89, 238910), (178, 119455), (445, 47782), (623, 34130), (890, 23891), (1246, 17065), (3115, 6826), (3413, 6230)]