280020272

素因数分解:

$2^4\times 7^1\times {\mathrm{31}}^1\times {\mathrm{80651}}^1$

素因数の和:80697

約数の個数: 40

約数和(自身を含む): 640054272

約数和(自身を除く): 360034000

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 56, 62, 112, 124, 217, 248, 434, 496, 868, 1736, 3472, 80651, 161302, 322604, 564557, 645208, 1129114, 1290416, 2258228, 2500181, 4516456, 5000362, 9032912, 10000724, 17501267, 20001448, 35002534, 40002896, 70005068, 140010136, 280020272]

約数ペア:

[(1, 280020272), (2, 140010136), (4, 70005068), (7, 40002896), (8, 35002534), (14, 20001448), (16, 17501267), (28, 10000724), (31, 9032912), (56, 5000362), (62, 4516456), (112, 2500181), (124, 2258228), (217, 1290416), (248, 1129114), (434, 645208), (496, 564557), (868, 322604), (1736, 161302), (3472, 80651)]