25521920

素因数分解:

$2^8\times 5^1\times {\mathrm{127}}^1\times {\mathrm{157}}^1$

素因数の和:305

約数の個数: 72

約数和(自身を含む): 62006784

約数和(自身を除く): 36484864

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 127, 128, 157, 160, 254, 256, 314, 320, 508, 628, 635, 640, 785, 1016, 1256, 1270, 1280, 1570, 2032, 2512, 2540, 3140, 4064, 5024, 5080, 6280, 8128, 10048, 10160, 12560, 16256, 19939, 20096, 20320, 25120, 32512, 39878, 40192, 40640, 50240, 79756, 81280, 99695, 100480, 159512, 162560, 199390, 200960, 319024, 398780, 638048, 797560, 1276096, 1595120, 2552192, 3190240, 5104384, 6380480, 12760960, 25521920]

約数ペア:

[(1, 25521920), (2, 12760960), (4, 6380480), (5, 5104384), (8, 3190240), (10, 2552192), (16, 1595120), (20, 1276096), (32, 797560), (40, 638048), (64, 398780), (80, 319024), (127, 200960), (128, 199390), (157, 162560), (160, 159512), (254, 100480), (256, 99695), (314, 81280), (320, 79756), (508, 50240), (628, 40640), (635, 40192), (640, 39878), (785, 32512), (1016, 25120), (1256, 20320), (1270, 20096), (1280, 19939), (1570, 16256), (2032, 12560), (2512, 10160), (2540, 10048), (3140, 8128), (4064, 6280), (5024, 5080)]