16400888

素因数分解:

$2^3\times 7^3\times {\mathrm{43}}^1\times {\mathrm{139}}^1$

素因数の和:209

約数の個数: 64

約数和(自身を含む): 36960000

約数和(自身を除く): 20559112

約数列:

[1, 2, 4, 7, 8, 14, 28, 43, 49, 56, 86, 98, 139, 172, 196, 278, 301, 343, 344, 392, 556, 602, 686, 973, 1112, 1204, 1372, 1946, 2107, 2408, 2744, 3892, 4214, 5977, 6811, 7784, 8428, 11954, 13622, 14749, 16856, 23908, 27244, 29498, 41839, 47677, 47816, 54488, 58996, 83678, 95354, 117992, 167356, 190708, 292873, 334712, 381416, 585746, 1171492, 2050111, 2342984, 4100222, 8200444, 16400888]

約数ペア:

[(1, 16400888), (2, 8200444), (4, 4100222), (7, 2342984), (8, 2050111), (14, 1171492), (28, 585746), (43, 381416), (49, 334712), (56, 292873), (86, 190708), (98, 167356), (139, 117992), (172, 95354), (196, 83678), (278, 58996), (301, 54488), (343, 47816), (344, 47677), (392, 41839), (556, 29498), (602, 27244), (686, 23908), (973, 16856), (1112, 14749), (1204, 13622), (1372, 11954), (1946, 8428), (2107, 7784), (2408, 6811), (2744, 5977), (3892, 4214)]