643060

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1$

素因数の和:136

約数の個数: 48

約数和(自身を含む): 1532160

約数和(自身を除く): 889100

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 37, 44, 55, 74, 79, 110, 148, 158, 185, 220, 316, 370, 395, 407, 740, 790, 814, 869, 1580, 1628, 1738, 2035, 2923, 3476, 4070, 4345, 5846, 8140, 8690, 11692, 14615, 17380, 29230, 32153, 58460, 64306, 128612, 160765, 321530, 643060]

約数ペア:

[(1, 643060), (2, 321530), (4, 160765), (5, 128612), (10, 64306), (11, 58460), (20, 32153), (22, 29230), (37, 17380), (44, 14615), (55, 11692), (74, 8690), (79, 8140), (110, 5846), (148, 4345), (158, 4070), (185, 3476), (220, 2923), (316, 2035), (370, 1738), (395, 1628), (407, 1580), (740, 869), (790, 814)]