289807280

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{517513}}^1$

素因数の和:517533

約数の個数: 40

約数和(自身を含む): 770060832

約数和(自身を除く): 480253552

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 517513, 1035026, 2070052, 2587565, 3622591, 4140104, 5175130, 7245182, 8280208, 10350260, 14490364, 18112955, 20700520, 28980728, 36225910, 41401040, 57961456, 72451820, 144903640, 289807280]

約数ペア:

[(1, 289807280), (2, 144903640), (4, 72451820), (5, 57961456), (7, 41401040), (8, 36225910), (10, 28980728), (14, 20700520), (16, 18112955), (20, 14490364), (28, 10350260), (35, 8280208), (40, 7245182), (56, 5175130), (70, 4140104), (80, 3622591), (112, 2587565), (140, 2070052), (280, 1035026), (560, 517513)]