81589900

素因数分解:

$2^2\times 5^2\times 7^2\times {\mathrm{16651}}^1$

素因数の和:16679

約数の個数: 54

約数和(自身を含む): 205968588

約数和(自身を除く): 124378688

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 49, 50, 70, 98, 100, 140, 175, 196, 245, 350, 490, 700, 980, 1225, 2450, 4900, 16651, 33302, 66604, 83255, 116557, 166510, 233114, 333020, 416275, 466228, 582785, 815899, 832550, 1165570, 1631798, 1665100, 2331140, 2913925, 3263596, 4079495, 5827850, 8158990, 11655700, 16317980, 20397475, 40794950, 81589900]

約数ペア:

[(1, 81589900), (2, 40794950), (4, 20397475), (5, 16317980), (7, 11655700), (10, 8158990), (14, 5827850), (20, 4079495), (25, 3263596), (28, 2913925), (35, 2331140), (49, 1665100), (50, 1631798), (70, 1165570), (98, 832550), (100, 815899), (140, 582785), (175, 466228), (196, 416275), (245, 333020), (350, 233114), (490, 166510), (700, 116557), (980, 83255), (1225, 66604), (2450, 33302), (4900, 16651)]