21218415

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{45631}}^1$

素因数の和:45670

約数の個数: 16

約数和(自身を含む): 35045376

約数和(自身を除く): 13826961

約数列:

[1, 3, 5, 15, 31, 93, 155, 465, 45631, 136893, 228155, 684465, 1414561, 4243683, 7072805, 21218415]

約数ペア:

[(1, 21218415), (3, 7072805), (5, 4243683), (15, 1414561), (31, 684465), (93, 228155), (155, 136893), (465, 45631)]