21031648

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{401}}^1$

素因数の和:571

約数の個数: 48

約数和(自身を含む): 45586800

約数和(自身を除く): 24555152

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 88, 149, 176, 298, 352, 401, 596, 802, 1192, 1604, 1639, 2384, 3208, 3278, 4411, 4768, 6416, 6556, 8822, 12832, 13112, 17644, 26224, 35288, 52448, 59749, 70576, 119498, 141152, 238996, 477992, 657239, 955984, 1314478, 1911968, 2628956, 5257912, 10515824, 21031648]

約数ペア:

[(1, 21031648), (2, 10515824), (4, 5257912), (8, 2628956), (11, 1911968), (16, 1314478), (22, 955984), (32, 657239), (44, 477992), (88, 238996), (149, 141152), (176, 119498), (298, 70576), (352, 59749), (401, 52448), (596, 35288), (802, 26224), (1192, 17644), (1604, 13112), (1639, 12832), (2384, 8822), (3208, 6556), (3278, 6416), (4411, 4768)]