123408920

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{191}}^1\times {\mathrm{557}}^1$

素因数の和:788

約数の個数: 64

約数和(自身を含む): 289267200

約数和(自身を除く): 165858280

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 191, 232, 290, 382, 557, 580, 764, 955, 1114, 1160, 1528, 1910, 2228, 2785, 3820, 4456, 5539, 5570, 7640, 11078, 11140, 16153, 22156, 22280, 27695, 32306, 44312, 55390, 64612, 80765, 106387, 110780, 129224, 161530, 212774, 221560, 323060, 425548, 531935, 646120, 851096, 1063870, 2127740, 3085223, 4255480, 6170446, 12340892, 15426115, 24681784, 30852230, 61704460, 123408920]

約数ペア:

[(1, 123408920), (2, 61704460), (4, 30852230), (5, 24681784), (8, 15426115), (10, 12340892), (20, 6170446), (29, 4255480), (40, 3085223), (58, 2127740), (116, 1063870), (145, 851096), (191, 646120), (232, 531935), (290, 425548), (382, 323060), (557, 221560), (580, 212774), (764, 161530), (955, 129224), (1114, 110780), (1160, 106387), (1528, 80765), (1910, 64612), (2228, 55390), (2785, 44312), (3820, 32306), (4456, 27695), (5539, 22280), (5570, 22156), (7640, 16153), (11078, 11140)]