18612020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{6997}}^1$

素因数の和:7032

約数の個数: 48

約数和(自身を含む): 47026560

約数和(自身を除く): 28414540

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 532, 665, 1330, 2660, 6997, 13994, 27988, 34985, 48979, 69970, 97958, 132943, 139940, 195916, 244895, 265886, 489790, 531772, 664715, 930601, 979580, 1329430, 1861202, 2658860, 3722404, 4653005, 9306010, 18612020]

約数ペア:

[(1, 18612020), (2, 9306010), (4, 4653005), (5, 3722404), (7, 2658860), (10, 1861202), (14, 1329430), (19, 979580), (20, 930601), (28, 664715), (35, 531772), (38, 489790), (70, 265886), (76, 244895), (95, 195916), (133, 139940), (140, 132943), (190, 97958), (266, 69970), (380, 48979), (532, 34985), (665, 27988), (1330, 13994), (2660, 6997)]