9990970

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{359}}^1$

素因数の和:411

約数の個数: 48

約数和(自身を含む): 20684160

約数和(自身を除く): 10693190

約数列:

[1, 2, 5, 10, 11, 22, 23, 46, 55, 110, 115, 121, 230, 242, 253, 359, 506, 605, 718, 1210, 1265, 1795, 2530, 2783, 3590, 3949, 5566, 7898, 8257, 13915, 16514, 19745, 27830, 39490, 41285, 43439, 82570, 86878, 90827, 181654, 217195, 434390, 454135, 908270, 999097, 1998194, 4995485, 9990970]

約数ペア:

[(1, 9990970), (2, 4995485), (5, 1998194), (10, 999097), (11, 908270), (22, 454135), (23, 434390), (46, 217195), (55, 181654), (110, 90827), (115, 86878), (121, 82570), (230, 43439), (242, 41285), (253, 39490), (359, 27830), (506, 19745), (605, 16514), (718, 13915), (1210, 8257), (1265, 7898), (1795, 5566), (2530, 3949), (2783, 3590)]