20948620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{223}}^1$

素因数の和:311

約数の個数: 96

約数和(自身を含む): 55996416

約数和(自身を除く): 35047796

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 61, 70, 77, 110, 122, 140, 154, 220, 223, 244, 305, 308, 385, 427, 446, 610, 671, 770, 854, 892, 1115, 1220, 1342, 1540, 1561, 1708, 2135, 2230, 2453, 2684, 3122, 3355, 4270, 4460, 4697, 4906, 6244, 6710, 7805, 8540, 9394, 9812, 12265, 13420, 13603, 15610, 17171, 18788, 23485, 24530, 27206, 31220, 34342, 46970, 49060, 54412, 68015, 68684, 85855, 93940, 95221, 136030, 149633, 171710, 190442, 272060, 299266, 343420, 380884, 476105, 598532, 748165, 952210, 1047431, 1496330, 1904420, 2094862, 2992660, 4189724, 5237155, 10474310, 20948620]

約数ペア:

[(1, 20948620), (2, 10474310), (4, 5237155), (5, 4189724), (7, 2992660), (10, 2094862), (11, 1904420), (14, 1496330), (20, 1047431), (22, 952210), (28, 748165), (35, 598532), (44, 476105), (55, 380884), (61, 343420), (70, 299266), (77, 272060), (110, 190442), (122, 171710), (140, 149633), (154, 136030), (220, 95221), (223, 93940), (244, 85855), (305, 68684), (308, 68015), (385, 54412), (427, 49060), (446, 46970), (610, 34342), (671, 31220), (770, 27206), (854, 24530), (892, 23485), (1115, 18788), (1220, 17171), (1342, 15610), (1540, 13603), (1561, 13420), (1708, 12265), (2135, 9812), (2230, 9394), (2453, 8540), (2684, 7805), (3122, 6710), (3355, 6244), (4270, 4906), (4460, 4697)]