21018550

素因数分解:

$2^1\times 5^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{373}}^1$

素因数の和:422

約数の個数: 72

約数和(自身を含む): 47581776

約数和(自身を除く): 26563226

約数列:

[1, 2, 5, 7, 10, 14, 23, 25, 35, 46, 49, 50, 70, 98, 115, 161, 175, 230, 245, 322, 350, 373, 490, 575, 746, 805, 1127, 1150, 1225, 1610, 1865, 2254, 2450, 2611, 3730, 4025, 5222, 5635, 8050, 8579, 9325, 11270, 13055, 17158, 18277, 18650, 26110, 28175, 36554, 42895, 56350, 60053, 65275, 85790, 91385, 120106, 130550, 182770, 214475, 300265, 420371, 428950, 456925, 600530, 840742, 913850, 1501325, 2101855, 3002650, 4203710, 10509275, 21018550]

約数ペア:

[(1, 21018550), (2, 10509275), (5, 4203710), (7, 3002650), (10, 2101855), (14, 1501325), (23, 913850), (25, 840742), (35, 600530), (46, 456925), (49, 428950), (50, 420371), (70, 300265), (98, 214475), (115, 182770), (161, 130550), (175, 120106), (230, 91385), (245, 85790), (322, 65275), (350, 60053), (373, 56350), (490, 42895), (575, 36554), (746, 28175), (805, 26110), (1127, 18650), (1150, 18277), (1225, 17158), (1610, 13055), (1865, 11270), (2254, 9325), (2450, 8579), (2611, 8050), (3730, 5635), (4025, 5222)]