21991530

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{647}}^1$

素因数の和:771

約数の個数: 64

約数和(自身を含む): 58226688

約数和(自身を除く): 36235158

約数列:

[1, 2, 3, 5, 6, 10, 11, 15, 22, 30, 33, 55, 66, 103, 110, 165, 206, 309, 330, 515, 618, 647, 1030, 1133, 1294, 1545, 1941, 2266, 3090, 3235, 3399, 3882, 5665, 6470, 6798, 7117, 9705, 11330, 14234, 16995, 19410, 21351, 33990, 35585, 42702, 66641, 71170, 106755, 133282, 199923, 213510, 333205, 399846, 666410, 733051, 999615, 1466102, 1999230, 2199153, 3665255, 4398306, 7330510, 10995765, 21991530]

約数ペア:

[(1, 21991530), (2, 10995765), (3, 7330510), (5, 4398306), (6, 3665255), (10, 2199153), (11, 1999230), (15, 1466102), (22, 999615), (30, 733051), (33, 666410), (55, 399846), (66, 333205), (103, 213510), (110, 199923), (165, 133282), (206, 106755), (309, 71170), (330, 66641), (515, 42702), (618, 35585), (647, 33990), (1030, 21351), (1133, 19410), (1294, 16995), (1545, 14234), (1941, 11330), (2266, 9705), (3090, 7117), (3235, 6798), (3399, 6470), (3882, 5665)]