20171945840

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{433}}^1\times {\mathrm{30649}}^1$

素因数の和:31114

約数の個数: 80

約数和(自身を含む): 49483812000

約数和(自身を除く): 29311866160

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 433, 760, 866, 1520, 1732, 2165, 3464, 4330, 6928, 8227, 8660, 16454, 17320, 30649, 32908, 34640, 41135, 61298, 65816, 82270, 122596, 131632, 153245, 164540, 245192, 306490, 329080, 490384, 582331, 612980, 658160, 1164662, 1225960, 2329324, 2451920, 2911655, 4658648, 5823310, 9317296, 11646620, 13271017, 23293240, 26542034, 46586480, 53084068, 66355085, 106168136, 132710170, 212336272, 252149323, 265420340, 504298646, 530840680, 1008597292, 1061681360, 1260746615, 2017194584, 2521493230, 4034389168, 5042986460, 10085972920, 20171945840]

約数ペア:

[(1, 20171945840), (2, 10085972920), (4, 5042986460), (5, 4034389168), (8, 2521493230), (10, 2017194584), (16, 1260746615), (19, 1061681360), (20, 1008597292), (38, 530840680), (40, 504298646), (76, 265420340), (80, 252149323), (95, 212336272), (152, 132710170), (190, 106168136), (304, 66355085), (380, 53084068), (433, 46586480), (760, 26542034), (866, 23293240), (1520, 13271017), (1732, 11646620), (2165, 9317296), (3464, 5823310), (4330, 4658648), (6928, 2911655), (8227, 2451920), (8660, 2329324), (16454, 1225960), (17320, 1164662), (30649, 658160), (32908, 612980), (34640, 582331), (41135, 490384), (61298, 329080), (65816, 306490), (82270, 245192), (122596, 164540), (131632, 153245)]