20006700980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{1409}}^1\times {\mathrm{14489}}^1$

素因数の和:15921

約数の個数: 72

約数和(自身を含む): 48911574600

約数和(自身を除く): 28904873620

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 1409, 2818, 5636, 7045, 9863, 14090, 14489, 19726, 28180, 28978, 39452, 49315, 57956, 69041, 72445, 98630, 101423, 138082, 144890, 197260, 202846, 276164, 289780, 345205, 405692, 507115, 690410, 709961, 1014230, 1380820, 1419922, 2028460, 2839844, 3549805, 7099610, 14199220, 20415001, 40830002, 81660004, 102075005, 142905007, 204150010, 285810014, 408300020, 571620028, 714525035, 1000335049, 1429050070, 2000670098, 2858100140, 4001340196, 5001675245, 10003350490, 20006700980]

約数ペア:

[(1, 20006700980), (2, 10003350490), (4, 5001675245), (5, 4001340196), (7, 2858100140), (10, 2000670098), (14, 1429050070), (20, 1000335049), (28, 714525035), (35, 571620028), (49, 408300020), (70, 285810014), (98, 204150010), (140, 142905007), (196, 102075005), (245, 81660004), (490, 40830002), (980, 20415001), (1409, 14199220), (2818, 7099610), (5636, 3549805), (7045, 2839844), (9863, 2028460), (14090, 1419922), (14489, 1380820), (19726, 1014230), (28180, 709961), (28978, 690410), (39452, 507115), (49315, 405692), (57956, 345205), (69041, 289780), (72445, 276164), (98630, 202846), (101423, 197260), (138082, 144890)]