21995512

素因数分解:

$2^3\times 7^2\times {\mathrm{11}}^1\times {\mathrm{5101}}^1$

素因数の和:5132

約数の個数: 48

約数和(自身を含む): 52346520

約数和(自身を除く): 30351008

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 49, 56, 77, 88, 98, 154, 196, 308, 392, 539, 616, 1078, 2156, 4312, 5101, 10202, 20404, 35707, 40808, 56111, 71414, 112222, 142828, 224444, 249949, 285656, 392777, 448888, 499898, 785554, 999796, 1571108, 1999592, 2749439, 3142216, 5498878, 10997756, 21995512]

約数ペア:

[(1, 21995512), (2, 10997756), (4, 5498878), (7, 3142216), (8, 2749439), (11, 1999592), (14, 1571108), (22, 999796), (28, 785554), (44, 499898), (49, 448888), (56, 392777), (77, 285656), (88, 249949), (98, 224444), (154, 142828), (196, 112222), (308, 71414), (392, 56111), (539, 40808), (616, 35707), (1078, 20404), (2156, 10202), (4312, 5101)]