179798980

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{127}}^1\times {\mathrm{997}}^1$

素因数の和:1204

約数の個数: 48

約数和(自身を含む): 386297856

約数和(自身を除く): 206498876

約数列:

[1, 2, 4, 5, 10, 20, 71, 127, 142, 254, 284, 355, 508, 635, 710, 997, 1270, 1420, 1994, 2540, 3988, 4985, 9017, 9970, 18034, 19940, 36068, 45085, 70787, 90170, 126619, 141574, 180340, 253238, 283148, 353935, 506476, 633095, 707870, 1266190, 1415740, 2532380, 8989949, 17979898, 35959796, 44949745, 89899490, 179798980]

約数ペア:

[(1, 179798980), (2, 89899490), (4, 44949745), (5, 35959796), (10, 17979898), (20, 8989949), (71, 2532380), (127, 1415740), (142, 1266190), (254, 707870), (284, 633095), (355, 506476), (508, 353935), (635, 283148), (710, 253238), (997, 180340), (1270, 141574), (1420, 126619), (1994, 90170), (2540, 70787), (3988, 45085), (4985, 36068), (9017, 19940), (9970, 18034)]