21000768290

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{263}}^1\times {\mathrm{1657}}^1$

素因数の和:2067

約数の個数: 64

約数和(自身を含む): 39078927360

約数和(自身を除く): 18078159070

約数列:

[1, 2, 5, 10, 61, 79, 122, 158, 263, 305, 395, 526, 610, 790, 1315, 1657, 2630, 3314, 4819, 8285, 9638, 16043, 16570, 20777, 24095, 32086, 41554, 48190, 80215, 101077, 103885, 130903, 160430, 202154, 207770, 261806, 435791, 505385, 654515, 871582, 1010770, 1267397, 1309030, 2178955, 2534794, 4357910, 6336985, 7985083, 12673970, 15970166, 26583251, 34427489, 39925415, 53166502, 68854978, 79850830, 132916255, 172137445, 265832510, 344274890, 2100076829, 4200153658, 10500384145, 21000768290]

約数ペア:

[(1, 21000768290), (2, 10500384145), (5, 4200153658), (10, 2100076829), (61, 344274890), (79, 265832510), (122, 172137445), (158, 132916255), (263, 79850830), (305, 68854978), (395, 53166502), (526, 39925415), (610, 34427489), (790, 26583251), (1315, 15970166), (1657, 12673970), (2630, 7985083), (3314, 6336985), (4819, 4357910), (8285, 2534794), (9638, 2178955), (16043, 1309030), (16570, 1267397), (20777, 1010770), (24095, 871582), (32086, 654515), (41554, 505385), (48190, 435791), (80215, 261806), (101077, 207770), (103885, 202154), (130903, 160430)]