21567315

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{263}}^1$

素因数の和:360

約数の個数: 64

約数和(自身を含む): 43794432

約数和(自身を除く): 22227117

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 55, 71, 77, 105, 165, 213, 231, 263, 355, 385, 497, 781, 789, 1065, 1155, 1315, 1491, 1841, 2343, 2485, 2893, 3905, 3945, 5467, 5523, 7455, 8679, 9205, 11715, 14465, 16401, 18673, 20251, 27335, 27615, 43395, 56019, 60753, 82005, 93365, 101255, 130711, 205403, 280095, 303765, 392133, 616209, 653555, 1027015, 1437821, 1960665, 3081045, 4313463, 7189105, 21567315]

約数ペア:

[(1, 21567315), (3, 7189105), (5, 4313463), (7, 3081045), (11, 1960665), (15, 1437821), (21, 1027015), (33, 653555), (35, 616209), (55, 392133), (71, 303765), (77, 280095), (105, 205403), (165, 130711), (213, 101255), (231, 93365), (263, 82005), (355, 60753), (385, 56019), (497, 43395), (781, 27615), (789, 27335), (1065, 20251), (1155, 18673), (1315, 16401), (1491, 14465), (1841, 11715), (2343, 9205), (2485, 8679), (2893, 7455), (3905, 5523), (3945, 5467)]