21980904

素因数分解:

$2^3\times 3^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{599}}^1$

素因数の和:758

約数の個数: 64

約数和(自身を含む): 60480000

約数和(自身を除く): 38499096

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 22, 24, 33, 44, 66, 88, 132, 139, 264, 278, 417, 556, 599, 834, 1112, 1198, 1529, 1668, 1797, 2396, 3058, 3336, 3594, 4587, 4792, 6116, 6589, 7188, 9174, 12232, 13178, 14376, 18348, 19767, 26356, 36696, 39534, 52712, 79068, 83261, 158136, 166522, 249783, 333044, 499566, 666088, 915871, 999132, 1831742, 1998264, 2747613, 3663484, 5495226, 7326968, 10990452, 21980904]

約数ペア:

[(1, 21980904), (2, 10990452), (3, 7326968), (4, 5495226), (6, 3663484), (8, 2747613), (11, 1998264), (12, 1831742), (22, 999132), (24, 915871), (33, 666088), (44, 499566), (66, 333044), (88, 249783), (132, 166522), (139, 158136), (264, 83261), (278, 79068), (417, 52712), (556, 39534), (599, 36696), (834, 26356), (1112, 19767), (1198, 18348), (1529, 14376), (1668, 13178), (1797, 12232), (2396, 9174), (3058, 7188), (3336, 6589), (3594, 6116), (4587, 4792)]