20165260240

素因数分解:

$2^4\times 5^1\times {\mathrm{1277}}^1\times {\mathrm{197389}}^1$

素因数の和:198679

約数の個数: 40

約数和(自身を含む): 46921182120

約数和(自身を除く): 26755921880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1277, 2554, 5108, 6385, 10216, 12770, 20432, 25540, 51080, 102160, 197389, 394778, 789556, 986945, 1579112, 1973890, 3158224, 3947780, 7895560, 15791120, 252065753, 504131506, 1008263012, 1260328765, 2016526024, 2520657530, 4033052048, 5041315060, 10082630120, 20165260240]

約数ペア:

[(1, 20165260240), (2, 10082630120), (4, 5041315060), (5, 4033052048), (8, 2520657530), (10, 2016526024), (16, 1260328765), (20, 1008263012), (40, 504131506), (80, 252065753), (1277, 15791120), (2554, 7895560), (5108, 3947780), (6385, 3158224), (10216, 1973890), (12770, 1579112), (20432, 986945), (25540, 789556), (51080, 394778), (102160, 197389)]