21000398510

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{744431}}^1$

素因数の和:744489

約数の個数: 64

約数和(自身を含む): 48024797184

約数和(自身を除く): 27024398674

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 31, 35, 62, 65, 70, 91, 130, 155, 182, 217, 310, 403, 434, 455, 806, 910, 1085, 2015, 2170, 2821, 4030, 5642, 14105, 28210, 744431, 1488862, 3722155, 5211017, 7444310, 9677603, 10422034, 19355206, 23077361, 26055085, 46154722, 48388015, 52110170, 67743221, 96776030, 115386805, 135486442, 161541527, 230773610, 300005693, 323083054, 338716105, 600011386, 677432210, 807707635, 1500028465, 1615415270, 2100039851, 3000056930, 4200079702, 10500199255, 21000398510]

約数ペア:

[(1, 21000398510), (2, 10500199255), (5, 4200079702), (7, 3000056930), (10, 2100039851), (13, 1615415270), (14, 1500028465), (26, 807707635), (31, 677432210), (35, 600011386), (62, 338716105), (65, 323083054), (70, 300005693), (91, 230773610), (130, 161541527), (155, 135486442), (182, 115386805), (217, 96776030), (310, 67743221), (403, 52110170), (434, 48388015), (455, 46154722), (806, 26055085), (910, 23077361), (1085, 19355206), (2015, 10422034), (2170, 9677603), (2821, 7444310), (4030, 5211017), (5642, 3722155), (14105, 1488862), (28210, 744431)]