20902388

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{167}}^1$

素因数の和:296

約数の個数: 48

約数和(自身を含む): 41489280

約数和(自身を除く): 20586892

約数列:

[1, 2, 4, 13, 26, 29, 52, 58, 83, 116, 166, 167, 332, 334, 377, 668, 754, 1079, 1508, 2158, 2171, 2407, 4316, 4342, 4814, 4843, 8684, 9628, 9686, 13861, 19372, 27722, 31291, 55444, 62582, 62959, 125164, 125918, 180193, 251836, 360386, 401969, 720772, 803938, 1607876, 5225597, 10451194, 20902388]

約数ペア:

[(1, 20902388), (2, 10451194), (4, 5225597), (13, 1607876), (26, 803938), (29, 720772), (52, 401969), (58, 360386), (83, 251836), (116, 180193), (166, 125918), (167, 125164), (332, 62959), (334, 62582), (377, 55444), (668, 31291), (754, 27722), (1079, 19372), (1508, 13861), (2158, 9686), (2171, 9628), (2407, 8684), (4316, 4843), (4342, 4814)]