20778963640

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{683}}^1\times {\mathrm{7841}}^1$

素因数の和:8632

約数の個数: 64

約数和(自身を含む): 47309844960

約数和(自身を除く): 26530881320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 683, 776, 970, 1366, 1940, 2732, 3415, 3880, 5464, 6830, 7841, 13660, 15682, 27320, 31364, 39205, 62728, 66251, 78410, 132502, 156820, 265004, 313640, 331255, 530008, 662510, 760577, 1325020, 1521154, 2650040, 3042308, 3802885, 5355403, 6084616, 7605770, 10710806, 15211540, 21421612, 26777015, 30423080, 42843224, 53554030, 107108060, 214216120, 519474091, 1038948182, 2077896364, 2597370455, 4155792728, 5194740910, 10389481820, 20778963640]

約数ペア:

[(1, 20778963640), (2, 10389481820), (4, 5194740910), (5, 4155792728), (8, 2597370455), (10, 2077896364), (20, 1038948182), (40, 519474091), (97, 214216120), (194, 107108060), (388, 53554030), (485, 42843224), (683, 30423080), (776, 26777015), (970, 21421612), (1366, 15211540), (1940, 10710806), (2732, 7605770), (3415, 6084616), (3880, 5355403), (5464, 3802885), (6830, 3042308), (7841, 2650040), (13660, 1521154), (15682, 1325020), (27320, 760577), (31364, 662510), (39205, 530008), (62728, 331255), (66251, 313640), (78410, 265004), (132502, 156820)]