261965808

素因数分解:

$2^4\times 3^2\times {\mathrm{13}}^1\times {\mathrm{139939}}^1$

素因数の和:139966

約数の個数: 60

約数和(自身を含む): 789541480

約数和(自身を除く): 527575672

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 36, 39, 48, 52, 72, 78, 104, 117, 144, 156, 208, 234, 312, 468, 624, 936, 1872, 139939, 279878, 419817, 559756, 839634, 1119512, 1259451, 1679268, 1819207, 2239024, 2518902, 3358536, 3638414, 5037804, 5457621, 6717072, 7276828, 10075608, 10915242, 14553656, 16372863, 20151216, 21830484, 29107312, 32745726, 43660968, 65491452, 87321936, 130982904, 261965808]

約数ペア:

[(1, 261965808), (2, 130982904), (3, 87321936), (4, 65491452), (6, 43660968), (8, 32745726), (9, 29107312), (12, 21830484), (13, 20151216), (16, 16372863), (18, 14553656), (24, 10915242), (26, 10075608), (36, 7276828), (39, 6717072), (48, 5457621), (52, 5037804), (72, 3638414), (78, 3358536), (104, 2518902), (117, 2239024), (144, 1819207), (156, 1679268), (208, 1259451), (234, 1119512), (312, 839634), (468, 559756), (624, 419817), (936, 279878), (1872, 139939)]