20163211720

素因数分解:

$2^3\times 5^1\times {\mathrm{8629}}^1\times {\mathrm{58417}}^1$

素因数の和:67057

約数の個数: 32

約数和(自身を含む): 45373260600

約数和(自身を除く): 25210048880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 8629, 17258, 34516, 43145, 58417, 69032, 86290, 116834, 172580, 233668, 292085, 345160, 467336, 584170, 1168340, 2336680, 504080293, 1008160586, 2016321172, 2520401465, 4032642344, 5040802930, 10081605860, 20163211720]

約数ペア:

[(1, 20163211720), (2, 10081605860), (4, 5040802930), (5, 4032642344), (8, 2520401465), (10, 2016321172), (20, 1008160586), (40, 504080293), (8629, 2336680), (17258, 1168340), (34516, 584170), (43145, 467336), (58417, 345160), (69032, 292085), (86290, 233668), (116834, 172580)]