21010101

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{439}}^1$

素因数の和:545

約数の個数: 32

約数和(自身を含む): 33454080

約数和(自身を除く): 12443979

約数列:

[1, 3, 7, 21, 43, 53, 129, 159, 301, 371, 439, 903, 1113, 1317, 2279, 3073, 6837, 9219, 15953, 18877, 23267, 47859, 56631, 69801, 132139, 162869, 396417, 488607, 1000481, 3001443, 7003367, 21010101]

約数ペア:

[(1, 21010101), (3, 7003367), (7, 3001443), (21, 1000481), (43, 488607), (53, 396417), (129, 162869), (159, 132139), (301, 69801), (371, 56631), (439, 47859), (903, 23267), (1113, 18877), (1317, 15953), (2279, 9219), (3073, 6837)]