20922760

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{211}}^1$

素因数の和:326

約数の個数: 64

約数和(自身を含む): 49302720

約数和(自身を除く): 28379960

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 67, 74, 134, 148, 185, 211, 268, 296, 335, 370, 422, 536, 670, 740, 844, 1055, 1340, 1480, 1688, 2110, 2479, 2680, 4220, 4958, 7807, 8440, 9916, 12395, 14137, 15614, 19832, 24790, 28274, 31228, 39035, 49580, 56548, 62456, 70685, 78070, 99160, 113096, 141370, 156140, 282740, 312280, 523069, 565480, 1046138, 2092276, 2615345, 4184552, 5230690, 10461380, 20922760]

約数ペア:

[(1, 20922760), (2, 10461380), (4, 5230690), (5, 4184552), (8, 2615345), (10, 2092276), (20, 1046138), (37, 565480), (40, 523069), (67, 312280), (74, 282740), (134, 156140), (148, 141370), (185, 113096), (211, 99160), (268, 78070), (296, 70685), (335, 62456), (370, 56548), (422, 49580), (536, 39035), (670, 31228), (740, 28274), (844, 24790), (1055, 19832), (1340, 15614), (1480, 14137), (1688, 12395), (2110, 9916), (2479, 8440), (2680, 7807), (4220, 4958)]