80366720

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{17939}}^1$

素因数の和:17965

約数の個数: 64

約数和(自身を含む): 219585600

約数和(自身を除く): 139218880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 280, 320, 448, 560, 640, 896, 1120, 2240, 4480, 17939, 35878, 71756, 89695, 125573, 143512, 179390, 251146, 287024, 358780, 502292, 574048, 627865, 717560, 1004584, 1148096, 1255730, 1435120, 2009168, 2296192, 2511460, 2870240, 4018336, 5022920, 5740480, 8036672, 10045840, 11480960, 16073344, 20091680, 40183360, 80366720]

約数ペア:

[(1, 80366720), (2, 40183360), (4, 20091680), (5, 16073344), (7, 11480960), (8, 10045840), (10, 8036672), (14, 5740480), (16, 5022920), (20, 4018336), (28, 2870240), (32, 2511460), (35, 2296192), (40, 2009168), (56, 1435120), (64, 1255730), (70, 1148096), (80, 1004584), (112, 717560), (128, 627865), (140, 574048), (160, 502292), (224, 358780), (280, 287024), (320, 251146), (448, 179390), (560, 143512), (640, 125573), (896, 89695), (1120, 71756), (2240, 35878), (4480, 17939)]