21212958

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{431}}^1\times {\mathrm{631}}^1$

素因数の和:1080

約数の個数: 32

約数和(自身を含む): 45868032

約数和(自身を除く): 24655074

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 431, 631, 862, 1262, 1293, 1893, 2586, 3786, 5603, 8203, 11206, 16406, 16809, 24609, 33618, 49218, 271961, 543922, 815883, 1631766, 3535493, 7070986, 10606479, 21212958]

約数ペア:

[(1, 21212958), (2, 10606479), (3, 7070986), (6, 3535493), (13, 1631766), (26, 815883), (39, 543922), (78, 271961), (431, 49218), (631, 33618), (862, 24609), (1262, 16809), (1293, 16406), (1893, 11206), (2586, 8203), (3786, 5603)]