20312688640

素因数分解:

$2^{11}\times 5^1\times {\mathrm{661}}^1\times {\mathrm{3001}}^1$

素因数の和:3689

約数の個数: 96

約数和(自身を含む): 48828550680

約数和(自身を除く): 28515862040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 661, 1024, 1280, 1322, 2048, 2560, 2644, 3001, 3305, 5120, 5288, 6002, 6610, 10240, 10576, 12004, 13220, 15005, 21152, 24008, 26440, 30010, 42304, 48016, 52880, 60020, 84608, 96032, 105760, 120040, 169216, 192064, 211520, 240080, 338432, 384128, 423040, 480160, 676864, 768256, 846080, 960320, 1353728, 1536512, 1692160, 1920640, 1983661, 3073024, 3384320, 3841280, 3967322, 6146048, 6768640, 7682560, 7934644, 9918305, 15365120, 15869288, 19836610, 30730240, 31738576, 39673220, 63477152, 79346440, 126954304, 158692880, 253908608, 317385760, 507817216, 634771520, 1015634432, 1269543040, 2031268864, 2539086080, 4062537728, 5078172160, 10156344320, 20312688640]

約数ペア:

[(1, 20312688640), (2, 10156344320), (4, 5078172160), (5, 4062537728), (8, 2539086080), (10, 2031268864), (16, 1269543040), (20, 1015634432), (32, 634771520), (40, 507817216), (64, 317385760), (80, 253908608), (128, 158692880), (160, 126954304), (256, 79346440), (320, 63477152), (512, 39673220), (640, 31738576), (661, 30730240), (1024, 19836610), (1280, 15869288), (1322, 15365120), (2048, 9918305), (2560, 7934644), (2644, 7682560), (3001, 6768640), (3305, 6146048), (5120, 3967322), (5288, 3841280), (6002, 3384320), (6610, 3073024), (10240, 1983661), (10576, 1920640), (12004, 1692160), (13220, 1536512), (15005, 1353728), (21152, 960320), (24008, 846080), (26440, 768256), (30010, 676864), (42304, 480160), (48016, 423040), (52880, 384128), (60020, 338432), (84608, 240080), (96032, 211520), (105760, 192064), (120040, 169216)]