78421840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{1069}}^1$

素因数の和:1220

約数の個数: 80

約数和(自身を含む): 210165120

約数和(自身を除く): 131743280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 131, 140, 262, 280, 524, 560, 655, 917, 1048, 1069, 1310, 1834, 2096, 2138, 2620, 3668, 4276, 4585, 5240, 5345, 7336, 7483, 8552, 9170, 10480, 10690, 14672, 14966, 17104, 18340, 21380, 29932, 36680, 37415, 42760, 59864, 73360, 74830, 85520, 119728, 140039, 149660, 280078, 299320, 560156, 598640, 700195, 980273, 1120312, 1400390, 1960546, 2240624, 2800780, 3921092, 4901365, 5601560, 7842184, 9802730, 11203120, 15684368, 19605460, 39210920, 78421840]

約数ペア:

[(1, 78421840), (2, 39210920), (4, 19605460), (5, 15684368), (7, 11203120), (8, 9802730), (10, 7842184), (14, 5601560), (16, 4901365), (20, 3921092), (28, 2800780), (35, 2240624), (40, 1960546), (56, 1400390), (70, 1120312), (80, 980273), (112, 700195), (131, 598640), (140, 560156), (262, 299320), (280, 280078), (524, 149660), (560, 140039), (655, 119728), (917, 85520), (1048, 74830), (1069, 73360), (1310, 59864), (1834, 42760), (2096, 37415), (2138, 36680), (2620, 29932), (3668, 21380), (4276, 18340), (4585, 17104), (5240, 14966), (5345, 14672), (7336, 10690), (7483, 10480), (8552, 9170)]