20129930

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{1999}}^1$

素因数の和:2078

約数の個数: 32

約数和(自身を含む): 38880000

約数和(自身を除く): 18750070

約数列:

[1, 2, 5, 10, 19, 38, 53, 95, 106, 190, 265, 530, 1007, 1999, 2014, 3998, 5035, 9995, 10070, 19990, 37981, 75962, 105947, 189905, 211894, 379810, 529735, 1059470, 2012993, 4025986, 10064965, 20129930]

約数ペア:

[(1, 20129930), (2, 10064965), (5, 4025986), (10, 2012993), (19, 1059470), (38, 529735), (53, 379810), (95, 211894), (106, 189905), (190, 105947), (265, 75962), (530, 37981), (1007, 19990), (1999, 10070), (2014, 9995), (3998, 5035)]