20804858740

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{197}}^1\times {\mathrm{383}}^1\times {\mathrm{811}}^1$

素因数の和:1417

約数の個数: 96

約数和(自身を含む): 46673915904

約数和(自身を除く): 25869057164

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 197, 340, 383, 394, 766, 788, 811, 985, 1532, 1622, 1915, 1970, 3244, 3349, 3830, 3940, 4055, 6511, 6698, 7660, 8110, 13022, 13396, 13787, 16220, 16745, 26044, 27574, 32555, 33490, 55148, 65110, 66980, 68935, 75451, 130220, 137870, 150902, 159767, 275740, 301804, 310613, 319534, 377255, 621226, 639068, 754510, 798835, 1242452, 1282667, 1509020, 1553065, 1597670, 2565334, 2716039, 3106130, 3195340, 5130668, 5280421, 5432078, 6212260, 6413335, 10560842, 10864156, 12826670, 13580195, 21121684, 25653340, 26402105, 27160390, 52804210, 54320780, 61190761, 105608420, 122381522, 244763044, 305953805, 611907610, 1040242937, 1223815220, 2080485874, 4160971748, 5201214685, 10402429370, 20804858740]

約数ペア:

[(1, 20804858740), (2, 10402429370), (4, 5201214685), (5, 4160971748), (10, 2080485874), (17, 1223815220), (20, 1040242937), (34, 611907610), (68, 305953805), (85, 244763044), (170, 122381522), (197, 105608420), (340, 61190761), (383, 54320780), (394, 52804210), (766, 27160390), (788, 26402105), (811, 25653340), (985, 21121684), (1532, 13580195), (1622, 12826670), (1915, 10864156), (1970, 10560842), (3244, 6413335), (3349, 6212260), (3830, 5432078), (3940, 5280421), (4055, 5130668), (6511, 3195340), (6698, 3106130), (7660, 2716039), (8110, 2565334), (13022, 1597670), (13396, 1553065), (13787, 1509020), (16220, 1282667), (16745, 1242452), (26044, 798835), (27574, 754510), (32555, 639068), (33490, 621226), (55148, 377255), (65110, 319534), (66980, 310613), (68935, 301804), (75451, 275740), (130220, 159767), (137870, 150902)]