21199030

素因数分解:

$2^1\times 5^1\times {\mathrm{83}}^1\times {\mathrm{25541}}^1$

素因数の和:25631

約数の個数: 16

約数和(自身を含む): 38619504

約数和(自身を除く): 17420474

約数列:

[1, 2, 5, 10, 83, 166, 415, 830, 25541, 51082, 127705, 255410, 2119903, 4239806, 10599515, 21199030]

約数ペア:

[(1, 21199030), (2, 10599515), (5, 4239806), (10, 2119903), (83, 255410), (166, 127705), (415, 51082), (830, 25541)]