278451320

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{142067}}^1$

素因数の和:142092

約数の個数: 48

約数和(自身を含む): 728808840

約数和(自身を除く): 450357520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 142067, 284134, 568268, 710335, 994469, 1136536, 1420670, 1988938, 2841340, 3977876, 4972345, 5682680, 6961283, 7955752, 9944690, 13922566, 19889380, 27845132, 34806415, 39778760, 55690264, 69612830, 139225660, 278451320]

約数ペア:

[(1, 278451320), (2, 139225660), (4, 69612830), (5, 55690264), (7, 39778760), (8, 34806415), (10, 27845132), (14, 19889380), (20, 13922566), (28, 9944690), (35, 7955752), (40, 6961283), (49, 5682680), (56, 4972345), (70, 3977876), (98, 2841340), (140, 1988938), (196, 1420670), (245, 1136536), (280, 994469), (392, 710335), (490, 568268), (980, 284134), (1960, 142067)]