21073645

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{1721}}^1$

素因数の和:1836

約数の個数: 16

約数和(自身を含む): 26449920

約数和(自身を除く): 5376275

約数列:

[1, 5, 31, 79, 155, 395, 1721, 2449, 8605, 12245, 53351, 135959, 266755, 679795, 4214729, 21073645]

約数ペア:

[(1, 21073645), (5, 4214729), (31, 679795), (79, 266755), (155, 135959), (395, 53351), (1721, 12245), (2449, 8605)]