66840320

素因数分解:

$2^8\times 5^1\times {\mathrm{79}}^1\times {\mathrm{661}}^1$

素因数の和:761

約数の個数: 72

約数和(自身を含む): 162375360

約数和(自身を除く): 95535040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 128, 158, 160, 256, 316, 320, 395, 632, 640, 661, 790, 1264, 1280, 1322, 1580, 2528, 2644, 3160, 3305, 5056, 5288, 6320, 6610, 10112, 10576, 12640, 13220, 20224, 21152, 25280, 26440, 42304, 50560, 52219, 52880, 84608, 101120, 104438, 105760, 169216, 208876, 211520, 261095, 417752, 423040, 522190, 835504, 846080, 1044380, 1671008, 2088760, 3342016, 4177520, 6684032, 8355040, 13368064, 16710080, 33420160, 66840320]

約数ペア:

[(1, 66840320), (2, 33420160), (4, 16710080), (5, 13368064), (8, 8355040), (10, 6684032), (16, 4177520), (20, 3342016), (32, 2088760), (40, 1671008), (64, 1044380), (79, 846080), (80, 835504), (128, 522190), (158, 423040), (160, 417752), (256, 261095), (316, 211520), (320, 208876), (395, 169216), (632, 105760), (640, 104438), (661, 101120), (790, 84608), (1264, 52880), (1280, 52219), (1322, 50560), (1580, 42304), (2528, 26440), (2644, 25280), (3160, 21152), (3305, 20224), (5056, 13220), (5288, 12640), (6320, 10576), (6610, 10112)]