81143860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{229}}^1\times {\mathrm{2531}}^1$

素因数の和:2776

約数の個数: 48

約数和(自身を含む): 195672960

約数和(自身を除く): 114529100

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 229, 458, 916, 1145, 1603, 2290, 2531, 3206, 4580, 5062, 6412, 8015, 10124, 12655, 16030, 17717, 25310, 32060, 35434, 50620, 70868, 88585, 177170, 354340, 579599, 1159198, 2318396, 2897995, 4057193, 5795990, 8114386, 11591980, 16228772, 20285965, 40571930, 81143860]

約数ペア:

[(1, 81143860), (2, 40571930), (4, 20285965), (5, 16228772), (7, 11591980), (10, 8114386), (14, 5795990), (20, 4057193), (28, 2897995), (35, 2318396), (70, 1159198), (140, 579599), (229, 354340), (458, 177170), (916, 88585), (1145, 70868), (1603, 50620), (2290, 35434), (2531, 32060), (3206, 25310), (4580, 17717), (5062, 16030), (6412, 12655), (8015, 10124)]