20253520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{613}}^1$

素因数の和:692

約数の個数: 80

約数和(自身を含む): 54817920

約数和(自身を除く): 34564400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 59, 70, 80, 112, 118, 140, 236, 280, 295, 413, 472, 560, 590, 613, 826, 944, 1180, 1226, 1652, 2065, 2360, 2452, 3065, 3304, 4130, 4291, 4720, 4904, 6130, 6608, 8260, 8582, 9808, 12260, 16520, 17164, 21455, 24520, 33040, 34328, 36167, 42910, 49040, 68656, 72334, 85820, 144668, 171640, 180835, 253169, 289336, 343280, 361670, 506338, 578672, 723340, 1012676, 1265845, 1446680, 2025352, 2531690, 2893360, 4050704, 5063380, 10126760, 20253520]

約数ペア:

[(1, 20253520), (2, 10126760), (4, 5063380), (5, 4050704), (7, 2893360), (8, 2531690), (10, 2025352), (14, 1446680), (16, 1265845), (20, 1012676), (28, 723340), (35, 578672), (40, 506338), (56, 361670), (59, 343280), (70, 289336), (80, 253169), (112, 180835), (118, 171640), (140, 144668), (236, 85820), (280, 72334), (295, 68656), (413, 49040), (472, 42910), (560, 36167), (590, 34328), (613, 33040), (826, 24520), (944, 21455), (1180, 17164), (1226, 16520), (1652, 12260), (2065, 9808), (2360, 8582), (2452, 8260), (3065, 6608), (3304, 6130), (4130, 4904), (4291, 4720)]