200817820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{227}}^1$

素因数の和:403

約数の個数: 96

約数和(自身を含む): 496419840

約数和(自身を除く): 295602020

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 89, 140, 142, 178, 227, 284, 355, 356, 445, 454, 497, 623, 710, 890, 908, 994, 1135, 1246, 1420, 1589, 1780, 1988, 2270, 2485, 2492, 3115, 3178, 4540, 4970, 6230, 6319, 6356, 7945, 9940, 12460, 12638, 15890, 16117, 20203, 25276, 31595, 31780, 32234, 40406, 44233, 63190, 64468, 80585, 80812, 88466, 101015, 112819, 126380, 141421, 161170, 176932, 202030, 221165, 225638, 282842, 322340, 404060, 442330, 451276, 564095, 565684, 707105, 884660, 1128190, 1414210, 1434413, 2256380, 2828420, 2868826, 5737652, 7172065, 10040891, 14344130, 20081782, 28688260, 40163564, 50204455, 100408910, 200817820]

約数ペア:

[(1, 200817820), (2, 100408910), (4, 50204455), (5, 40163564), (7, 28688260), (10, 20081782), (14, 14344130), (20, 10040891), (28, 7172065), (35, 5737652), (70, 2868826), (71, 2828420), (89, 2256380), (140, 1434413), (142, 1414210), (178, 1128190), (227, 884660), (284, 707105), (355, 565684), (356, 564095), (445, 451276), (454, 442330), (497, 404060), (623, 322340), (710, 282842), (890, 225638), (908, 221165), (994, 202030), (1135, 176932), (1246, 161170), (1420, 141421), (1589, 126380), (1780, 112819), (1988, 101015), (2270, 88466), (2485, 80812), (2492, 80585), (3115, 64468), (3178, 63190), (4540, 44233), (4970, 40406), (6230, 32234), (6319, 31780), (6356, 31595), (7945, 25276), (9940, 20203), (12460, 16117), (12638, 15890)]