21077818

素因数分解:

$2^1\times {\mathrm{61}}^1\times {\mathrm{197}}^1\times {\mathrm{877}}^1$

素因数の和:1137

約数の個数: 16

約数和(自身を含む): 32334984

約数和(自身を除く): 11257166

約数列:

[1, 2, 61, 122, 197, 394, 877, 1754, 12017, 24034, 53497, 106994, 172769, 345538, 10538909, 21077818]

約数ペア:

[(1, 21077818), (2, 10538909), (61, 345538), (122, 172769), (197, 106994), (394, 53497), (877, 24034), (1754, 12017)]