20642115

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{2861}}^1$

素因数の和:2919

約数の個数: 32

約数和(自身を含む): 36542016

約数和(自身を除く): 15899901

約数列:

[1, 3, 5, 13, 15, 37, 39, 65, 111, 185, 195, 481, 555, 1443, 2405, 2861, 7215, 8583, 14305, 37193, 42915, 105857, 111579, 185965, 317571, 529285, 557895, 1376141, 1587855, 4128423, 6880705, 20642115]

約数ペア:

[(1, 20642115), (3, 6880705), (5, 4128423), (13, 1587855), (15, 1376141), (37, 557895), (39, 529285), (65, 317571), (111, 185965), (185, 111579), (195, 105857), (481, 42915), (555, 37193), (1443, 14305), (2405, 8583), (2861, 7215)]