20953760

素因数分解:

$2^5\times 5^1\times {\mathrm{173}}^1\times {\mathrm{757}}^1$

素因数の和:945

約数の個数: 48

約数和(自身を含む): 49855176

約数和(自身を除く): 28901416

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 173, 346, 692, 757, 865, 1384, 1514, 1730, 2768, 3028, 3460, 3785, 5536, 6056, 6920, 7570, 12112, 13840, 15140, 24224, 27680, 30280, 60560, 121120, 130961, 261922, 523844, 654805, 1047688, 1309610, 2095376, 2619220, 4190752, 5238440, 10476880, 20953760]

約数ペア:

[(1, 20953760), (2, 10476880), (4, 5238440), (5, 4190752), (8, 2619220), (10, 2095376), (16, 1309610), (20, 1047688), (32, 654805), (40, 523844), (80, 261922), (160, 130961), (173, 121120), (346, 60560), (692, 30280), (757, 27680), (865, 24224), (1384, 15140), (1514, 13840), (1730, 12112), (2768, 7570), (3028, 6920), (3460, 6056), (3785, 5536)]