17811890

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{1801}}^1$

素因数の和:1874

約数の個数: 32

約数和(自身を含む): 34252416

約数和(自身を除く): 16440526

約数列:

[1, 2, 5, 10, 23, 43, 46, 86, 115, 215, 230, 430, 989, 1801, 1978, 3602, 4945, 9005, 9890, 18010, 41423, 77443, 82846, 154886, 207115, 387215, 414230, 774430, 1781189, 3562378, 8905945, 17811890]

約数ペア:

[(1, 17811890), (2, 8905945), (5, 3562378), (10, 1781189), (23, 774430), (43, 414230), (46, 387215), (86, 207115), (115, 154886), (215, 82846), (230, 77443), (430, 41423), (989, 18010), (1801, 9890), (1978, 9005), (3602, 4945)]