20401245

素因数分解:

$3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{12253}}^1$

素因数の和:12301

約数の個数: 24

約数和(自身を含む): 36320856

約数和(自身を除く): 15919611

約数列:

[1, 3, 5, 9, 15, 37, 45, 111, 185, 333, 555, 1665, 12253, 36759, 61265, 110277, 183795, 453361, 551385, 1360083, 2266805, 4080249, 6800415, 20401245]

約数ペア:

[(1, 20401245), (3, 6800415), (5, 4080249), (9, 2266805), (15, 1360083), (37, 551385), (45, 453361), (111, 183795), (185, 110277), (333, 61265), (555, 36759), (1665, 12253)]