20096020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{79}}^2$

素因数の和:197

約数の個数: 72

約数和(自身を含む): 50972544

約数和(自身を除く): 30876524

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 79, 92, 115, 140, 158, 161, 230, 316, 322, 395, 460, 553, 644, 790, 805, 1106, 1580, 1610, 1817, 2212, 2765, 3220, 3634, 5530, 6241, 7268, 9085, 11060, 12482, 12719, 18170, 24964, 25438, 31205, 36340, 43687, 50876, 62410, 63595, 87374, 124820, 127190, 143543, 174748, 218435, 254380, 287086, 436870, 574172, 717715, 873740, 1004801, 1435430, 2009602, 2870860, 4019204, 5024005, 10048010, 20096020]

約数ペア:

[(1, 20096020), (2, 10048010), (4, 5024005), (5, 4019204), (7, 2870860), (10, 2009602), (14, 1435430), (20, 1004801), (23, 873740), (28, 717715), (35, 574172), (46, 436870), (70, 287086), (79, 254380), (92, 218435), (115, 174748), (140, 143543), (158, 127190), (161, 124820), (230, 87374), (316, 63595), (322, 62410), (395, 50876), (460, 43687), (553, 36340), (644, 31205), (790, 25438), (805, 24964), (1106, 18170), (1580, 12719), (1610, 12482), (1817, 11060), (2212, 9085), (2765, 7268), (3220, 6241), (3634, 5530)]