20984628

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{1907}}^1$

素因数の和:2052

約数の個数: 48

約数和(自身を含む): 56415744

約数和(自身を除く): 35431116

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 131, 262, 393, 524, 786, 917, 1572, 1834, 1907, 2751, 3668, 3814, 5502, 5721, 7628, 11004, 11442, 13349, 22884, 26698, 40047, 53396, 80094, 160188, 249817, 499634, 749451, 999268, 1498902, 1748719, 2997804, 3497438, 5246157, 6994876, 10492314, 20984628]

約数ペア:

[(1, 20984628), (2, 10492314), (3, 6994876), (4, 5246157), (6, 3497438), (7, 2997804), (12, 1748719), (14, 1498902), (21, 999268), (28, 749451), (42, 499634), (84, 249817), (131, 160188), (262, 80094), (393, 53396), (524, 40047), (786, 26698), (917, 22884), (1572, 13349), (1834, 11442), (1907, 11004), (2751, 7628), (3668, 5721), (3814, 5502)]