78437480

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{2003}}^1$

素因数の和:2114

約数の個数: 64

約数和(自身を含む): 194788800

約数和(自身を除く): 116351320

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 89, 110, 178, 220, 356, 440, 445, 712, 890, 979, 1780, 1958, 2003, 3560, 3916, 4006, 4895, 7832, 8012, 9790, 10015, 16024, 19580, 20030, 22033, 39160, 40060, 44066, 80120, 88132, 110165, 176264, 178267, 220330, 356534, 440660, 713068, 881320, 891335, 1426136, 1782670, 1960937, 3565340, 3921874, 7130680, 7843748, 9804685, 15687496, 19609370, 39218740, 78437480]

約数ペア:

[(1, 78437480), (2, 39218740), (4, 19609370), (5, 15687496), (8, 9804685), (10, 7843748), (11, 7130680), (20, 3921874), (22, 3565340), (40, 1960937), (44, 1782670), (55, 1426136), (88, 891335), (89, 881320), (110, 713068), (178, 440660), (220, 356534), (356, 220330), (440, 178267), (445, 176264), (712, 110165), (890, 88132), (979, 80120), (1780, 44066), (1958, 40060), (2003, 39160), (3560, 22033), (3916, 20030), (4006, 19580), (4895, 16024), (7832, 10015), (8012, 9790)]