20087538560

素因数分解:

$2^7\times 5^1\times {\mathrm{79}}^1\times {\mathrm{397301}}^1$

素因数の和:397399

約数の個数: 64

約数和(自身を含む): 48629764800

約数和(自身を除く): 28542226240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 128, 158, 160, 316, 320, 395, 632, 640, 790, 1264, 1580, 2528, 3160, 5056, 6320, 10112, 12640, 25280, 50560, 397301, 794602, 1589204, 1986505, 3178408, 3973010, 6356816, 7946020, 12713632, 15892040, 25427264, 31386779, 31784080, 50854528, 62773558, 63568160, 125547116, 127136320, 156933895, 251094232, 254272640, 313867790, 502188464, 627735580, 1004376928, 1255471160, 2008753856, 2510942320, 4017507712, 5021884640, 10043769280, 20087538560]

約数ペア:

[(1, 20087538560), (2, 10043769280), (4, 5021884640), (5, 4017507712), (8, 2510942320), (10, 2008753856), (16, 1255471160), (20, 1004376928), (32, 627735580), (40, 502188464), (64, 313867790), (79, 254272640), (80, 251094232), (128, 156933895), (158, 127136320), (160, 125547116), (316, 63568160), (320, 62773558), (395, 50854528), (632, 31784080), (640, 31386779), (790, 25427264), (1264, 15892040), (1580, 12713632), (2528, 7946020), (3160, 6356816), (5056, 3973010), (6320, 3178408), (10112, 1986505), (12640, 1589204), (25280, 794602), (50560, 397301)]