21005488504

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{193}}^1\times {\mathrm{13591}}^1$

素因数の和:13821

約数の個数: 128

約数和(自身を含む): 53158855680

約数和(自身を除く): 32153367176

約数列:

[1, 2, 4, 7, 8, 11, 13, 14, 22, 26, 28, 44, 52, 56, 77, 88, 91, 104, 143, 154, 182, 193, 286, 308, 364, 386, 572, 616, 728, 772, 1001, 1144, 1351, 1544, 2002, 2123, 2509, 2702, 4004, 4246, 5018, 5404, 8008, 8492, 10036, 10808, 13591, 14861, 16984, 17563, 20072, 27182, 27599, 29722, 35126, 54364, 55198, 59444, 70252, 95137, 108728, 110396, 118888, 140504, 149501, 176683, 190274, 193193, 220792, 299002, 353366, 380548, 386386, 598004, 706732, 761096, 772772, 1046507, 1196008, 1236781, 1413464, 1545544, 1943513, 2093014, 2473562, 2623063, 3887026, 4186028, 4947124, 5246126, 7774052, 8372056, 9894248, 10492252, 13604591, 15548104, 18361441, 20984504, 27209182, 28853693, 34099819, 36722882, 54418364, 57707386, 68199638, 73445764, 108836728, 115414772, 136399276, 146891528, 201975851, 230829544, 238698733, 272798552, 375098009, 403951702, 477397466, 750196018, 807903404, 954794932, 1500392036, 1615806808, 1909589864, 2625686063, 3000784072, 5251372126, 10502744252, 21005488504]

約数ペア:

[(1, 21005488504), (2, 10502744252), (4, 5251372126), (7, 3000784072), (8, 2625686063), (11, 1909589864), (13, 1615806808), (14, 1500392036), (22, 954794932), (26, 807903404), (28, 750196018), (44, 477397466), (52, 403951702), (56, 375098009), (77, 272798552), (88, 238698733), (91, 230829544), (104, 201975851), (143, 146891528), (154, 136399276), (182, 115414772), (193, 108836728), (286, 73445764), (308, 68199638), (364, 57707386), (386, 54418364), (572, 36722882), (616, 34099819), (728, 28853693), (772, 27209182), (1001, 20984504), (1144, 18361441), (1351, 15548104), (1544, 13604591), (2002, 10492252), (2123, 9894248), (2509, 8372056), (2702, 7774052), (4004, 5246126), (4246, 4947124), (5018, 4186028), (5404, 3887026), (8008, 2623063), (8492, 2473562), (10036, 2093014), (10808, 1943513), (13591, 1545544), (14861, 1413464), (16984, 1236781), (17563, 1196008), (20072, 1046507), (27182, 772772), (27599, 761096), (29722, 706732), (35126, 598004), (54364, 386386), (55198, 380548), (59444, 353366), (70252, 299002), (95137, 220792), (108728, 193193), (110396, 190274), (118888, 176683), (140504, 149501)]