21500798

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1$

素因数の和:320

約数の個数: 32

約数和(自身を含む): 36288000

約数和(自身を除く): 14787202

約数列:

[1, 2, 11, 22, 79, 89, 139, 158, 178, 278, 869, 979, 1529, 1738, 1958, 3058, 7031, 10981, 12371, 14062, 21962, 24742, 77341, 120791, 136081, 154682, 241582, 272162, 977309, 1954618, 10750399, 21500798]

約数ペア:

[(1, 21500798), (2, 10750399), (11, 1954618), (22, 977309), (79, 272162), (89, 241582), (139, 154682), (158, 136081), (178, 120791), (278, 77341), (869, 24742), (979, 21962), (1529, 14062), (1738, 12371), (1958, 10981), (3058, 7031)]