838498640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{21089}}^1$

素因数の和:21180

約数の個数: 80

約数和(自身を含む): 2259498240

約数和(自身を除く): 1420999600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 71, 80, 112, 140, 142, 280, 284, 355, 497, 560, 568, 710, 994, 1136, 1420, 1988, 2485, 2840, 3976, 4970, 5680, 7952, 9940, 19880, 21089, 39760, 42178, 84356, 105445, 147623, 168712, 210890, 295246, 337424, 421780, 590492, 738115, 843560, 1180984, 1476230, 1497319, 1687120, 2361968, 2952460, 2994638, 5904920, 5989276, 7486595, 10481233, 11809840, 11978552, 14973190, 20962466, 23957104, 29946380, 41924932, 52406165, 59892760, 83849864, 104812330, 119785520, 167699728, 209624660, 419249320, 838498640]

約数ペア:

[(1, 838498640), (2, 419249320), (4, 209624660), (5, 167699728), (7, 119785520), (8, 104812330), (10, 83849864), (14, 59892760), (16, 52406165), (20, 41924932), (28, 29946380), (35, 23957104), (40, 20962466), (56, 14973190), (70, 11978552), (71, 11809840), (80, 10481233), (112, 7486595), (140, 5989276), (142, 5904920), (280, 2994638), (284, 2952460), (355, 2361968), (497, 1687120), (560, 1497319), (568, 1476230), (710, 1180984), (994, 843560), (1136, 738115), (1420, 590492), (1988, 421780), (2485, 337424), (2840, 295246), (3976, 210890), (4970, 168712), (5680, 147623), (7952, 105445), (9940, 84356), (19880, 42178), (21089, 39760)]