80685020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{16333}}^1$

素因数の和:16374

約数の個数: 48

約数和(自身を含む): 192087840

約数和(自身を除く): 111402820

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 988, 1235, 2470, 4940, 16333, 32666, 65332, 81665, 163330, 212329, 310327, 326660, 424658, 620654, 849316, 1061645, 1241308, 1551635, 2123290, 3103270, 4034251, 4246580, 6206540, 8068502, 16137004, 20171255, 40342510, 80685020]

約数ペア:

[(1, 80685020), (2, 40342510), (4, 20171255), (5, 16137004), (10, 8068502), (13, 6206540), (19, 4246580), (20, 4034251), (26, 3103270), (38, 2123290), (52, 1551635), (65, 1241308), (76, 1061645), (95, 849316), (130, 620654), (190, 424658), (247, 326660), (260, 310327), (380, 212329), (494, 163330), (988, 81665), (1235, 65332), (2470, 32666), (4940, 16333)]