28780635

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{3989}}^1$

素因数の和:4047

約数の個数: 32

約数和(自身を含む): 50944320

約数和(自身を除く): 22163685

約数列:

[1, 3, 5, 13, 15, 37, 39, 65, 111, 185, 195, 481, 555, 1443, 2405, 3989, 7215, 11967, 19945, 51857, 59835, 147593, 155571, 259285, 442779, 737965, 777855, 1918709, 2213895, 5756127, 9593545, 28780635]

約数ペア:

[(1, 28780635), (3, 9593545), (5, 5756127), (13, 2213895), (15, 1918709), (37, 777855), (39, 737965), (65, 442779), (111, 259285), (185, 155571), (195, 147593), (481, 59835), (555, 51857), (1443, 19945), (2405, 11967), (3989, 7215)]