21451287

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1613}}^1$

素因数の和:1671

約数の個数: 32

約数和(自身を含む): 34707456

約数和(自身を除く): 13256169

約数列:

[1, 3, 11, 13, 31, 33, 39, 93, 143, 341, 403, 429, 1023, 1209, 1613, 4433, 4839, 13299, 17743, 20969, 50003, 53229, 62907, 150009, 230659, 550033, 650039, 691977, 1650099, 1950117, 7150429, 21451287]

約数ペア:

[(1, 21451287), (3, 7150429), (11, 1950117), (13, 1650099), (31, 691977), (33, 650039), (39, 550033), (93, 230659), (143, 150009), (341, 62907), (403, 53229), (429, 50003), (1023, 20969), (1209, 17743), (1613, 13299), (4433, 4839)]