12213880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{181}}^1\times {\mathrm{241}}^1$

素因数の和:440

約数の個数: 64

約数和(自身を含む): 31711680

約数和(自身を除く): 19497800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 181, 241, 280, 362, 482, 724, 905, 964, 1205, 1267, 1448, 1687, 1810, 1928, 2410, 2534, 3374, 3620, 4820, 5068, 6335, 6748, 7240, 8435, 9640, 10136, 12670, 13496, 16870, 25340, 33740, 43621, 50680, 67480, 87242, 174484, 218105, 305347, 348968, 436210, 610694, 872420, 1221388, 1526735, 1744840, 2442776, 3053470, 6106940, 12213880]

約数ペア:

[(1, 12213880), (2, 6106940), (4, 3053470), (5, 2442776), (7, 1744840), (8, 1526735), (10, 1221388), (14, 872420), (20, 610694), (28, 436210), (35, 348968), (40, 305347), (56, 218105), (70, 174484), (140, 87242), (181, 67480), (241, 50680), (280, 43621), (362, 33740), (482, 25340), (724, 16870), (905, 13496), (964, 12670), (1205, 10136), (1267, 9640), (1448, 8435), (1687, 7240), (1810, 6748), (1928, 6335), (2410, 5068), (2534, 4820), (3374, 3620)]