320440900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^2\times {\mathrm{67}}^1\times {\mathrm{283}}^1$

素因数の和:390

約数の個数: 108

約数和(自身を含む): 766898832

約数和(自身を除く): 446457932

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 67, 100, 130, 134, 169, 260, 268, 283, 325, 335, 338, 566, 650, 670, 676, 845, 871, 1132, 1300, 1340, 1415, 1675, 1690, 1742, 2830, 3350, 3380, 3484, 3679, 4225, 4355, 5660, 6700, 7075, 7358, 8450, 8710, 11323, 14150, 14716, 16900, 17420, 18395, 18961, 21775, 22646, 28300, 36790, 37922, 43550, 45292, 47827, 56615, 73580, 75844, 87100, 91975, 94805, 95654, 113230, 183950, 189610, 191308, 226460, 239135, 246493, 283075, 367900, 379220, 474025, 478270, 492986, 566150, 948050, 956540, 985972, 1132300, 1195675, 1232465, 1896100, 2391350, 2464930, 3204409, 4782700, 4929860, 6162325, 6408818, 12324650, 12817636, 16022045, 24649300, 32044090, 64088180, 80110225, 160220450, 320440900]

約数ペア:

[(1, 320440900), (2, 160220450), (4, 80110225), (5, 64088180), (10, 32044090), (13, 24649300), (20, 16022045), (25, 12817636), (26, 12324650), (50, 6408818), (52, 6162325), (65, 4929860), (67, 4782700), (100, 3204409), (130, 2464930), (134, 2391350), (169, 1896100), (260, 1232465), (268, 1195675), (283, 1132300), (325, 985972), (335, 956540), (338, 948050), (566, 566150), (650, 492986), (670, 478270), (676, 474025), (845, 379220), (871, 367900), (1132, 283075), (1300, 246493), (1340, 239135), (1415, 226460), (1675, 191308), (1690, 189610), (1742, 183950), (2830, 113230), (3350, 95654), (3380, 94805), (3484, 91975), (3679, 87100), (4225, 75844), (4355, 73580), (5660, 56615), (6700, 47827), (7075, 45292), (7358, 43550), (8450, 37922), (8710, 36790), (11323, 28300), (14150, 22646), (14716, 21775), (16900, 18961), (17420, 18395)]