278330920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{994039}}^1$

素因数の和:994057

約数の個数: 32

約数和(自身を含む): 715708800

約数和(自身を除く): 437377880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 994039, 1988078, 3976156, 4970195, 6958273, 7952312, 9940390, 13916546, 19880780, 27833092, 34791365, 39761560, 55666184, 69582730, 139165460, 278330920]

約数ペア:

[(1, 278330920), (2, 139165460), (4, 69582730), (5, 55666184), (7, 39761560), (8, 34791365), (10, 27833092), (14, 19880780), (20, 13916546), (28, 9940390), (35, 7952312), (40, 6958273), (56, 4970195), (70, 3976156), (140, 1988078), (280, 994039)]