20419040

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{7507}}^1$

素因数の和:7539

約数の個数: 48

約数和(自身を含む): 51084432

約数和(自身を除く): 30665392

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 85, 136, 160, 170, 272, 340, 544, 680, 1360, 2720, 7507, 15014, 30028, 37535, 60056, 75070, 120112, 127619, 150140, 240224, 255238, 300280, 510476, 600560, 638095, 1020952, 1201120, 1276190, 2041904, 2552380, 4083808, 5104760, 10209520, 20419040]

約数ペア:

[(1, 20419040), (2, 10209520), (4, 5104760), (5, 4083808), (8, 2552380), (10, 2041904), (16, 1276190), (17, 1201120), (20, 1020952), (32, 638095), (34, 600560), (40, 510476), (68, 300280), (80, 255238), (85, 240224), (136, 150140), (160, 127619), (170, 120112), (272, 75070), (340, 60056), (544, 37535), (680, 30028), (1360, 15014), (2720, 7507)]