28165917

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1\times {\mathrm{149}}^1$

素因数の和:333

約数の個数: 32

約数和(自身を含む): 42134400

約数和(自身を除く): 13968483

約数列:

[1, 3, 13, 37, 39, 111, 131, 149, 393, 447, 481, 1443, 1703, 1937, 4847, 5109, 5513, 5811, 14541, 16539, 19519, 58557, 63011, 71669, 189033, 215007, 253747, 722203, 761241, 2166609, 9388639, 28165917]

約数ペア:

[(1, 28165917), (3, 9388639), (13, 2166609), (37, 761241), (39, 722203), (111, 253747), (131, 215007), (149, 189033), (393, 71669), (447, 63011), (481, 58557), (1443, 19519), (1703, 16539), (1937, 14541), (4847, 5811), (5109, 5513)]