19388551

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{151}}^1$

素因数の和:271

約数の個数: 32

約数和(自身を含む): 25740288

約数和(自身を除く): 6351737

約数列:

[1, 7, 13, 17, 83, 91, 119, 151, 221, 581, 1057, 1079, 1411, 1547, 1963, 2567, 7553, 9877, 12533, 13741, 17969, 18343, 33371, 87731, 128401, 162929, 213061, 233597, 1140503, 1491427, 2769793, 19388551]

約数ペア:

[(1, 19388551), (7, 2769793), (13, 1491427), (17, 1140503), (83, 233597), (91, 213061), (119, 162929), (151, 128401), (221, 87731), (581, 33371), (1057, 18343), (1079, 17969), (1411, 13741), (1547, 12533), (1963, 9877), (2567, 7553)]