80871700

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{8887}}^1$

素因数の和:8921

約数の個数: 72

約数和(自身を含む): 216013952

約数和(自身を除く): 135142252

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 25, 26, 28, 35, 50, 52, 65, 70, 91, 100, 130, 140, 175, 182, 260, 325, 350, 364, 455, 650, 700, 910, 1300, 1820, 2275, 4550, 8887, 9100, 17774, 35548, 44435, 62209, 88870, 115531, 124418, 177740, 222175, 231062, 248836, 311045, 444350, 462124, 577655, 622090, 808717, 888700, 1155310, 1244180, 1555225, 1617434, 2310620, 2888275, 3110450, 3234868, 4043585, 5776550, 6220900, 8087170, 11553100, 16174340, 20217925, 40435850, 80871700]

約数ペア:

[(1, 80871700), (2, 40435850), (4, 20217925), (5, 16174340), (7, 11553100), (10, 8087170), (13, 6220900), (14, 5776550), (20, 4043585), (25, 3234868), (26, 3110450), (28, 2888275), (35, 2310620), (50, 1617434), (52, 1555225), (65, 1244180), (70, 1155310), (91, 888700), (100, 808717), (130, 622090), (140, 577655), (175, 462124), (182, 444350), (260, 311045), (325, 248836), (350, 231062), (364, 222175), (455, 177740), (650, 124418), (700, 115531), (910, 88870), (1300, 62209), (1820, 44435), (2275, 35548), (4550, 17774), (8887, 9100)]