1815220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{223}}^1$

素因数の和:280

約数の個数: 48

約数和(自身を含む): 4290048

約数和(自身を除く): 2474828

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 37, 44, 55, 74, 110, 148, 185, 220, 223, 370, 407, 446, 740, 814, 892, 1115, 1628, 2035, 2230, 2453, 4070, 4460, 4906, 8140, 8251, 9812, 12265, 16502, 24530, 33004, 41255, 49060, 82510, 90761, 165020, 181522, 363044, 453805, 907610, 1815220]

約数ペア:

[(1, 1815220), (2, 907610), (4, 453805), (5, 363044), (10, 181522), (11, 165020), (20, 90761), (22, 82510), (37, 49060), (44, 41255), (55, 33004), (74, 24530), (110, 16502), (148, 12265), (185, 9812), (220, 8251), (223, 8140), (370, 4906), (407, 4460), (446, 4070), (740, 2453), (814, 2230), (892, 2035), (1115, 1628)]