20051031

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{607}}^1$

素因数の和:652

約数の個数: 48

約数和(自身を含む): 36227072

約数和(自身を除く): 16176041

約数列:

[1, 3, 7, 11, 13, 21, 33, 39, 77, 91, 121, 143, 231, 273, 363, 429, 607, 847, 1001, 1573, 1821, 2541, 3003, 4249, 4719, 6677, 7891, 11011, 12747, 20031, 23673, 33033, 46739, 55237, 73447, 86801, 140217, 165711, 220341, 260403, 514129, 607607, 954811, 1542387, 1822821, 2864433, 6683677, 20051031]

約数ペア:

[(1, 20051031), (3, 6683677), (7, 2864433), (11, 1822821), (13, 1542387), (21, 954811), (33, 607607), (39, 514129), (77, 260403), (91, 220341), (121, 165711), (143, 140217), (231, 86801), (273, 73447), (363, 55237), (429, 46739), (607, 33033), (847, 23673), (1001, 20031), (1573, 12747), (1821, 11011), (2541, 7891), (3003, 6677), (4249, 4719)]