40981760

素因数分解:

$2^8\times 5^1\times {\mathrm{101}}^1\times {\mathrm{317}}^1$

素因数の和:439

約数の個数: 72

約数和(自身を含む): 99448776

約数和(自身を除く): 58467016

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 101, 128, 160, 202, 256, 317, 320, 404, 505, 634, 640, 808, 1010, 1268, 1280, 1585, 1616, 2020, 2536, 3170, 3232, 4040, 5072, 6340, 6464, 8080, 10144, 12680, 12928, 16160, 20288, 25360, 25856, 32017, 32320, 40576, 50720, 64034, 64640, 81152, 101440, 128068, 129280, 160085, 202880, 256136, 320170, 405760, 512272, 640340, 1024544, 1280680, 2049088, 2561360, 4098176, 5122720, 8196352, 10245440, 20490880, 40981760]

約数ペア:

[(1, 40981760), (2, 20490880), (4, 10245440), (5, 8196352), (8, 5122720), (10, 4098176), (16, 2561360), (20, 2049088), (32, 1280680), (40, 1024544), (64, 640340), (80, 512272), (101, 405760), (128, 320170), (160, 256136), (202, 202880), (256, 160085), (317, 129280), (320, 128068), (404, 101440), (505, 81152), (634, 64640), (640, 64034), (808, 50720), (1010, 40576), (1268, 32320), (1280, 32017), (1585, 25856), (1616, 25360), (2020, 20288), (2536, 16160), (3170, 12928), (3232, 12680), (4040, 10144), (5072, 8080), (6340, 6464)]