18778960

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{103}}^1$

素因数の和:212

約数の個数: 80

約数和(自身を含む): 45961344

約数和(自身を除く): 27182384

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 53, 80, 86, 103, 106, 172, 206, 212, 215, 265, 344, 412, 424, 430, 515, 530, 688, 824, 848, 860, 1030, 1060, 1648, 1720, 2060, 2120, 2279, 3440, 4120, 4240, 4429, 4558, 5459, 8240, 8858, 9116, 10918, 11395, 17716, 18232, 21836, 22145, 22790, 27295, 35432, 36464, 43672, 44290, 45580, 54590, 70864, 87344, 88580, 91160, 109180, 177160, 182320, 218360, 234737, 354320, 436720, 469474, 938948, 1173685, 1877896, 2347370, 3755792, 4694740, 9389480, 18778960]

約数ペア:

[(1, 18778960), (2, 9389480), (4, 4694740), (5, 3755792), (8, 2347370), (10, 1877896), (16, 1173685), (20, 938948), (40, 469474), (43, 436720), (53, 354320), (80, 234737), (86, 218360), (103, 182320), (106, 177160), (172, 109180), (206, 91160), (212, 88580), (215, 87344), (265, 70864), (344, 54590), (412, 45580), (424, 44290), (430, 43672), (515, 36464), (530, 35432), (688, 27295), (824, 22790), (848, 22145), (860, 21836), (1030, 18232), (1060, 17716), (1648, 11395), (1720, 10918), (2060, 9116), (2120, 8858), (2279, 8240), (3440, 5459), (4120, 4558), (4240, 4429)]