20123505

素因数分解:

$3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{6481}}^1$

素因数の和:6518

約数の個数: 32

約数和(自身を含む): 37336320

約数和(自身を除く): 17212815

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 115, 135, 207, 345, 621, 1035, 3105, 6481, 19443, 32405, 58329, 97215, 149063, 174987, 291645, 447189, 745315, 874935, 1341567, 2235945, 4024701, 6707835, 20123505]

約数ペア:

[(1, 20123505), (3, 6707835), (5, 4024701), (9, 2235945), (15, 1341567), (23, 874935), (27, 745315), (45, 447189), (69, 291645), (115, 174987), (135, 149063), (207, 97215), (345, 58329), (621, 32405), (1035, 19443), (3105, 6481)]