278962520

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{410239}}^1$

素因数の和:410267

約数の個数: 32

約数和(自身を含む): 664588800

約数和(自身を除く): 385626280

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 410239, 820478, 1640956, 2051195, 3281912, 4102390, 6974063, 8204780, 13948126, 16409560, 27896252, 34870315, 55792504, 69740630, 139481260, 278962520]

約数ペア:

[(1, 278962520), (2, 139481260), (4, 69740630), (5, 55792504), (8, 34870315), (10, 27896252), (17, 16409560), (20, 13948126), (34, 8204780), (40, 6974063), (68, 4102390), (85, 3281912), (136, 2051195), (170, 1640956), (340, 820478), (680, 410239)]