21041445838

素因数分解:

$2^1\times 7^2\times {\mathrm{227}}^1\times {\mathrm{643}}^1\times {\mathrm{1471}}^1$

素因数の和:2357

約数の個数: 48

約数和(自身を含む): 36959376384

約数和(自身を除く): 15917930546

約数列:

[1, 2, 7, 14, 49, 98, 227, 454, 643, 1286, 1471, 1589, 2942, 3178, 4501, 9002, 10297, 11123, 20594, 22246, 31507, 63014, 72079, 144158, 145961, 291922, 333917, 667834, 945853, 1021727, 1891706, 2043454, 2337419, 4674838, 6620971, 7152089, 13241942, 14304178, 16361933, 32723866, 46346797, 92693594, 214708631, 429417262, 1502960417, 3005920834, 10520722919, 21041445838]

約数ペア:

[(1, 21041445838), (2, 10520722919), (7, 3005920834), (14, 1502960417), (49, 429417262), (98, 214708631), (227, 92693594), (454, 46346797), (643, 32723866), (1286, 16361933), (1471, 14304178), (1589, 13241942), (2942, 7152089), (3178, 6620971), (4501, 4674838), (9002, 2337419), (10297, 2043454), (11123, 1891706), (20594, 1021727), (22246, 945853), (31507, 667834), (63014, 333917), (72079, 291922), (144158, 145961)]