20407437616

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1021}}^1\times {\mathrm{1777}}^1$

素因数の和:2862

約数の個数: 80

約数和(自身を含む): 42811252960

約数和(自身を除く): 22403815344

約数列:

[1, 2, 4, 8, 16, 19, 37, 38, 74, 76, 148, 152, 296, 304, 592, 703, 1021, 1406, 1777, 2042, 2812, 3554, 4084, 5624, 7108, 8168, 11248, 14216, 16336, 19399, 28432, 33763, 37777, 38798, 65749, 67526, 75554, 77596, 131498, 135052, 151108, 155192, 262996, 270104, 302216, 310384, 525992, 540208, 604432, 717763, 1051984, 1249231, 1435526, 1814317, 2498462, 2871052, 3628634, 4996924, 5742104, 7257268, 9993848, 11484208, 14514536, 19987696, 29029072, 34472023, 67129729, 68944046, 134259458, 137888092, 268518916, 275776184, 537037832, 551552368, 1074075664, 1275464851, 2550929702, 5101859404, 10203718808, 20407437616]

約数ペア:

[(1, 20407437616), (2, 10203718808), (4, 5101859404), (8, 2550929702), (16, 1275464851), (19, 1074075664), (37, 551552368), (38, 537037832), (74, 275776184), (76, 268518916), (148, 137888092), (152, 134259458), (296, 68944046), (304, 67129729), (592, 34472023), (703, 29029072), (1021, 19987696), (1406, 14514536), (1777, 11484208), (2042, 9993848), (2812, 7257268), (3554, 5742104), (4084, 4996924), (5624, 3628634), (7108, 2871052), (8168, 2498462), (11248, 1814317), (14216, 1435526), (16336, 1249231), (19399, 1051984), (28432, 717763), (33763, 604432), (37777, 540208), (38798, 525992), (65749, 310384), (67526, 302216), (75554, 270104), (77596, 262996), (131498, 155192), (135052, 151108)]