644534144

素因数分解:

$2^7\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{1279}}^1$

素因数の和:1451

約数の個数: 64

約数和(自身を含む): 1336934400

約数和(自身を除く): 692400256

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 127, 128, 248, 254, 496, 508, 992, 1016, 1279, 1984, 2032, 2558, 3937, 3968, 4064, 5116, 7874, 8128, 10232, 15748, 16256, 20464, 31496, 39649, 40928, 62992, 79298, 81856, 125984, 158596, 162433, 163712, 251968, 317192, 324866, 503936, 634384, 649732, 1268768, 1299464, 2537536, 2598928, 5035423, 5075072, 5197856, 10070846, 10395712, 20141692, 20791424, 40283384, 80566768, 161133536, 322267072, 644534144]

約数ペア:

[(1, 644534144), (2, 322267072), (4, 161133536), (8, 80566768), (16, 40283384), (31, 20791424), (32, 20141692), (62, 10395712), (64, 10070846), (124, 5197856), (127, 5075072), (128, 5035423), (248, 2598928), (254, 2537536), (496, 1299464), (508, 1268768), (992, 649732), (1016, 634384), (1279, 503936), (1984, 324866), (2032, 317192), (2558, 251968), (3937, 163712), (3968, 162433), (4064, 158596), (5116, 125984), (7874, 81856), (8128, 79298), (10232, 62992), (15748, 40928), (16256, 39649), (20464, 31496)]