21518748

素因数分解:

$2^2\times 3^2\times {\mathrm{43}}^1\times {\mathrm{13901}}^1$

素因数の和:13954

約数の個数: 36

約数和(自身を含む): 55663608

約数和(自身を除く): 34144860

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 43, 86, 129, 172, 258, 387, 516, 774, 1548, 13901, 27802, 41703, 55604, 83406, 125109, 166812, 250218, 500436, 597743, 1195486, 1793229, 2390972, 3586458, 5379687, 7172916, 10759374, 21518748]

約数ペア:

[(1, 21518748), (2, 10759374), (3, 7172916), (4, 5379687), (6, 3586458), (9, 2390972), (12, 1793229), (18, 1195486), (36, 597743), (43, 500436), (86, 250218), (129, 166812), (172, 125109), (258, 83406), (387, 55604), (516, 41703), (774, 27802), (1548, 13901)]