21167309890

素因数分解:

$2^1\times 5^1\times {\mathrm{83}}^1\times {\mathrm{25502783}}^1$

素因数の和:25502873

約数の個数: 16

約数和(自身を含む): 38560209408

約数和(自身を除く): 17392899518

約数列:

[1, 2, 5, 10, 83, 166, 415, 830, 25502783, 51005566, 127513915, 255027830, 2116730989, 4233461978, 10583654945, 21167309890]

約数ペア:

[(1, 21167309890), (2, 10583654945), (5, 4233461978), (10, 2116730989), (83, 255027830), (166, 127513915), (415, 51005566), (830, 25502783)]