19971285

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{1481}}^1$

素因数の和:1549

約数の個数: 32

約数和(自身を含む): 34145280

約数和(自身を除く): 14173995

約数列:

[1, 3, 5, 15, 29, 31, 87, 93, 145, 155, 435, 465, 899, 1481, 2697, 4443, 4495, 7405, 13485, 22215, 42949, 45911, 128847, 137733, 214745, 229555, 644235, 688665, 1331419, 3994257, 6657095, 19971285]

約数ペア:

[(1, 19971285), (3, 6657095), (5, 3994257), (15, 1331419), (29, 688665), (31, 644235), (87, 229555), (93, 214745), (145, 137733), (155, 128847), (435, 45911), (465, 42949), (899, 22215), (1481, 13485), (2697, 7405), (4443, 4495)]