20512474480

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{13495049}}^1$

素因数の和:13495081

約数の個数: 40

約数和(自身を含む): 50201586000

約数和(自身を除く): 29689111520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 13495049, 26990098, 53980196, 67475245, 107960392, 134950490, 215920784, 256405931, 269900980, 512811862, 539801960, 1025623724, 1079603920, 1282029655, 2051247448, 2564059310, 4102494896, 5128118620, 10256237240, 20512474480]

約数ペア:

[(1, 20512474480), (2, 10256237240), (4, 5128118620), (5, 4102494896), (8, 2564059310), (10, 2051247448), (16, 1282029655), (19, 1079603920), (20, 1025623724), (38, 539801960), (40, 512811862), (76, 269900980), (80, 256405931), (95, 215920784), (152, 134950490), (190, 107960392), (304, 67475245), (380, 53980196), (760, 26990098), (1520, 13495049)]