21009889030

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^3\times {\mathrm{71}}^1\times {\mathrm{13469}}^1$

素因数の和:13586

約数の個数: 64

約数和(自身を含む): 41547945600

約数和(自身を除く): 20538056570

約数列:

[1, 2, 5, 10, 13, 26, 65, 71, 130, 142, 169, 338, 355, 710, 845, 923, 1690, 1846, 2197, 4394, 4615, 9230, 10985, 11999, 13469, 21970, 23998, 26938, 59995, 67345, 119990, 134690, 155987, 175097, 311974, 350194, 779935, 875485, 956299, 1559870, 1750970, 1912598, 2276261, 4552522, 4781495, 9562990, 11381305, 12431887, 22762610, 24863774, 29591393, 59182786, 62159435, 124318870, 147956965, 161614531, 295913930, 323229062, 808072655, 1616145310, 2100988903, 4201977806, 10504944515, 21009889030]

約数ペア:

[(1, 21009889030), (2, 10504944515), (5, 4201977806), (10, 2100988903), (13, 1616145310), (26, 808072655), (65, 323229062), (71, 295913930), (130, 161614531), (142, 147956965), (169, 124318870), (338, 62159435), (355, 59182786), (710, 29591393), (845, 24863774), (923, 22762610), (1690, 12431887), (1846, 11381305), (2197, 9562990), (4394, 4781495), (4615, 4552522), (9230, 2276261), (10985, 1912598), (11999, 1750970), (13469, 1559870), (21970, 956299), (23998, 875485), (26938, 779935), (59995, 350194), (67345, 311974), (119990, 175097), (134690, 155987)]