20680960

素因数分解:

$2^8\times 5^1\times {\mathrm{107}}^1\times {\mathrm{151}}^1$

素因数の和:279

約数の個数: 72

約数和(自身を含む): 50331456

約数和(自身を除く): 29650496

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 107, 128, 151, 160, 214, 256, 302, 320, 428, 535, 604, 640, 755, 856, 1070, 1208, 1280, 1510, 1712, 2140, 2416, 3020, 3424, 4280, 4832, 6040, 6848, 8560, 9664, 12080, 13696, 16157, 17120, 19328, 24160, 27392, 32314, 34240, 38656, 48320, 64628, 68480, 80785, 96640, 129256, 136960, 161570, 193280, 258512, 323140, 517024, 646280, 1034048, 1292560, 2068096, 2585120, 4136192, 5170240, 10340480, 20680960]

約数ペア:

[(1, 20680960), (2, 10340480), (4, 5170240), (5, 4136192), (8, 2585120), (10, 2068096), (16, 1292560), (20, 1034048), (32, 646280), (40, 517024), (64, 323140), (80, 258512), (107, 193280), (128, 161570), (151, 136960), (160, 129256), (214, 96640), (256, 80785), (302, 68480), (320, 64628), (428, 48320), (535, 38656), (604, 34240), (640, 32314), (755, 27392), (856, 24160), (1070, 19328), (1208, 17120), (1280, 16157), (1510, 13696), (1712, 12080), (2140, 9664), (2416, 8560), (3020, 6848), (3424, 6040), (4280, 4832)]