21975057

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{509}}^1$

素因数の和:575

約数の個数: 40

約数和(自身を含む): 36285480

約数和(自身を除く): 14310423

約数列:

[1, 3, 9, 13, 27, 39, 41, 81, 117, 123, 351, 369, 509, 533, 1053, 1107, 1527, 1599, 3321, 4581, 4797, 6617, 13743, 14391, 19851, 20869, 41229, 43173, 59553, 62607, 178659, 187821, 271297, 535977, 563463, 813891, 1690389, 2441673, 7325019, 21975057]

約数ペア:

[(1, 21975057), (3, 7325019), (9, 2441673), (13, 1690389), (27, 813891), (39, 563463), (41, 535977), (81, 271297), (117, 187821), (123, 178659), (351, 62607), (369, 59553), (509, 43173), (533, 41229), (1053, 20869), (1107, 19851), (1527, 14391), (1599, 13743), (3321, 6617), (4581, 4797)]