139681280

素因数分解:

$2^9\times 5^1\times {\mathrm{54563}}^1$

素因数の和:54586

約数の個数: 40

約数和(自身を含む): 334913832

約数和(自身を除く): 195232552

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 54563, 109126, 218252, 272815, 436504, 545630, 873008, 1091260, 1746016, 2182520, 3492032, 4365040, 6984064, 8730080, 13968128, 17460160, 27936256, 34920320, 69840640, 139681280]

約数ペア:

[(1, 139681280), (2, 69840640), (4, 34920320), (5, 27936256), (8, 17460160), (10, 13968128), (16, 8730080), (20, 6984064), (32, 4365040), (40, 3492032), (64, 2182520), (80, 1746016), (128, 1091260), (160, 873008), (256, 545630), (320, 436504), (512, 272815), (640, 218252), (1280, 109126), (2560, 54563)]