42720440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{271}}^1\times {\mathrm{563}}^1$

素因数の和:852

約数の個数: 64

約数和(自身を含む): 110453760

約数和(自身を除く): 67733320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 271, 280, 542, 563, 1084, 1126, 1355, 1897, 2168, 2252, 2710, 2815, 3794, 3941, 4504, 5420, 5630, 7588, 7882, 9485, 10840, 11260, 15176, 15764, 18970, 19705, 22520, 31528, 37940, 39410, 75880, 78820, 152573, 157640, 305146, 610292, 762865, 1068011, 1220584, 1525730, 2136022, 3051460, 4272044, 5340055, 6102920, 8544088, 10680110, 21360220, 42720440]

約数ペア:

[(1, 42720440), (2, 21360220), (4, 10680110), (5, 8544088), (7, 6102920), (8, 5340055), (10, 4272044), (14, 3051460), (20, 2136022), (28, 1525730), (35, 1220584), (40, 1068011), (56, 762865), (70, 610292), (140, 305146), (271, 157640), (280, 152573), (542, 78820), (563, 75880), (1084, 39410), (1126, 37940), (1355, 31528), (1897, 22520), (2168, 19705), (2252, 18970), (2710, 15764), (2815, 15176), (3794, 11260), (3941, 10840), (4504, 9485), (5420, 7882), (5630, 7588)]