20217490940

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{167}}^1\times {\mathrm{208729}}^1$

素因数の和:208934

約数の個数: 48

約数和(自身を含む): 44183966400

約数和(自身を除く): 23966475460

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 167, 290, 334, 580, 668, 835, 1670, 3340, 4843, 9686, 19372, 24215, 48430, 96860, 208729, 417458, 834916, 1043645, 2087290, 4174580, 6053141, 12106282, 24212564, 30265705, 34857743, 60531410, 69715486, 121062820, 139430972, 174288715, 348577430, 697154860, 1010874547, 2021749094, 4043498188, 5054372735, 10108745470, 20217490940]

約数ペア:

[(1, 20217490940), (2, 10108745470), (4, 5054372735), (5, 4043498188), (10, 2021749094), (20, 1010874547), (29, 697154860), (58, 348577430), (116, 174288715), (145, 139430972), (167, 121062820), (290, 69715486), (334, 60531410), (580, 34857743), (668, 30265705), (835, 24212564), (1670, 12106282), (3340, 6053141), (4843, 4174580), (9686, 2087290), (19372, 1043645), (24215, 834916), (48430, 417458), (96860, 208729)]