20105920

素因数分解:

$2^6\times 5^1\times {\mathrm{83}}^1\times {\mathrm{757}}^1$

素因数の和:857

約数の個数: 56

約数和(自身を含む): 48518064

約数和(自身を除く): 28412144

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 83, 160, 166, 320, 332, 415, 664, 757, 830, 1328, 1514, 1660, 2656, 3028, 3320, 3785, 5312, 6056, 6640, 7570, 12112, 13280, 15140, 24224, 26560, 30280, 48448, 60560, 62831, 121120, 125662, 242240, 251324, 314155, 502648, 628310, 1005296, 1256620, 2010592, 2513240, 4021184, 5026480, 10052960, 20105920]

約数ペア:

[(1, 20105920), (2, 10052960), (4, 5026480), (5, 4021184), (8, 2513240), (10, 2010592), (16, 1256620), (20, 1005296), (32, 628310), (40, 502648), (64, 314155), (80, 251324), (83, 242240), (160, 125662), (166, 121120), (320, 62831), (332, 60560), (415, 48448), (664, 30280), (757, 26560), (830, 24224), (1328, 15140), (1514, 13280), (1660, 12112), (2656, 7570), (3028, 6640), (3320, 6056), (3785, 5312)]