15404840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{223}}^1$

素因数の和:402

約数の個数: 64

約数和(自身を含む): 38223360

約数和(自身を除く): 22818520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 157, 220, 223, 314, 440, 446, 628, 785, 892, 1115, 1256, 1570, 1727, 1784, 2230, 2453, 3140, 3454, 4460, 4906, 6280, 6908, 8635, 8920, 9812, 12265, 13816, 17270, 19624, 24530, 34540, 35011, 49060, 69080, 70022, 98120, 140044, 175055, 280088, 350110, 385121, 700220, 770242, 1400440, 1540484, 1925605, 3080968, 3851210, 7702420, 15404840]

約数ペア:

[(1, 15404840), (2, 7702420), (4, 3851210), (5, 3080968), (8, 1925605), (10, 1540484), (11, 1400440), (20, 770242), (22, 700220), (40, 385121), (44, 350110), (55, 280088), (88, 175055), (110, 140044), (157, 98120), (220, 70022), (223, 69080), (314, 49060), (440, 35011), (446, 34540), (628, 24530), (785, 19624), (892, 17270), (1115, 13816), (1256, 12265), (1570, 9812), (1727, 8920), (1784, 8635), (2230, 6908), (2453, 6280), (3140, 4906), (3454, 4460)]