20661460

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{907}}^1$

素因数の和:1000

約数の個数: 48

約数和(自身を含む): 46678464

約数和(自身を除く): 26017004

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 67, 68, 85, 134, 170, 268, 335, 340, 670, 907, 1139, 1340, 1814, 2278, 3628, 4535, 4556, 5695, 9070, 11390, 15419, 18140, 22780, 30838, 60769, 61676, 77095, 121538, 154190, 243076, 303845, 308380, 607690, 1033073, 1215380, 2066146, 4132292, 5165365, 10330730, 20661460]

約数ペア:

[(1, 20661460), (2, 10330730), (4, 5165365), (5, 4132292), (10, 2066146), (17, 1215380), (20, 1033073), (34, 607690), (67, 308380), (68, 303845), (85, 243076), (134, 154190), (170, 121538), (268, 77095), (335, 61676), (340, 60769), (670, 30838), (907, 22780), (1139, 18140), (1340, 15419), (1814, 11390), (2278, 9070), (3628, 5695), (4535, 4556)]