19941580

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1\times {\mathrm{293}}^1$

素因数の和:426

約数の個数: 48

約数和(自身を含む): 43563744

約数和(自身を除く): 23622164

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 83, 164, 166, 205, 293, 332, 410, 415, 586, 820, 830, 1172, 1465, 1660, 2930, 3403, 5860, 6806, 12013, 13612, 17015, 24026, 24319, 34030, 48052, 48638, 60065, 68060, 97276, 120130, 121595, 240260, 243190, 486380, 997079, 1994158, 3988316, 4985395, 9970790, 19941580]

約数ペア:

[(1, 19941580), (2, 9970790), (4, 4985395), (5, 3988316), (10, 1994158), (20, 997079), (41, 486380), (82, 243190), (83, 240260), (164, 121595), (166, 120130), (205, 97276), (293, 68060), (332, 60065), (410, 48638), (415, 48052), (586, 34030), (820, 24319), (830, 24026), (1172, 17015), (1465, 13612), (1660, 12013), (2930, 6806), (3403, 5860)]