80890280

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{137}}^1\times {\mathrm{509}}^1$

素因数の和:686

約数の個数: 64

約数和(自身を含む): 190026000

約数和(自身を除く): 109135720

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 137, 145, 232, 274, 290, 509, 548, 580, 685, 1018, 1096, 1160, 1370, 2036, 2545, 2740, 3973, 4072, 5090, 5480, 7946, 10180, 14761, 15892, 19865, 20360, 29522, 31784, 39730, 59044, 69733, 73805, 79460, 118088, 139466, 147610, 158920, 278932, 295220, 348665, 557864, 590440, 697330, 1394660, 2022257, 2789320, 4044514, 8089028, 10111285, 16178056, 20222570, 40445140, 80890280]

約数ペア:

[(1, 80890280), (2, 40445140), (4, 20222570), (5, 16178056), (8, 10111285), (10, 8089028), (20, 4044514), (29, 2789320), (40, 2022257), (58, 1394660), (116, 697330), (137, 590440), (145, 557864), (232, 348665), (274, 295220), (290, 278932), (509, 158920), (548, 147610), (580, 139466), (685, 118088), (1018, 79460), (1096, 73805), (1160, 69733), (1370, 59044), (2036, 39730), (2545, 31784), (2740, 29522), (3973, 20360), (4072, 19865), (5090, 15892), (5480, 14761), (7946, 10180)]