78472640

素因数分解:

$2^6\times 5^1\times {\mathrm{251}}^1\times {\mathrm{977}}^1$

素因数の和:1245

約数の個数: 56

約数和(自身を含む): 187799472

約数和(自身を除く): 109326832

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 251, 320, 502, 977, 1004, 1255, 1954, 2008, 2510, 3908, 4016, 4885, 5020, 7816, 8032, 9770, 10040, 15632, 16064, 19540, 20080, 31264, 39080, 40160, 62528, 78160, 80320, 156320, 245227, 312640, 490454, 980908, 1226135, 1961816, 2452270, 3923632, 4904540, 7847264, 9809080, 15694528, 19618160, 39236320, 78472640]

約数ペア:

[(1, 78472640), (2, 39236320), (4, 19618160), (5, 15694528), (8, 9809080), (10, 7847264), (16, 4904540), (20, 3923632), (32, 2452270), (40, 1961816), (64, 1226135), (80, 980908), (160, 490454), (251, 312640), (320, 245227), (502, 156320), (977, 80320), (1004, 78160), (1255, 62528), (1954, 40160), (2008, 39080), (2510, 31264), (3908, 20080), (4016, 19540), (4885, 16064), (5020, 15632), (7816, 10040), (8032, 9770)]