21449505

素因数分解:

$3^1\times 5^1\times 7^3\times {\mathrm{11}}^1\times {\mathrm{379}}^1$

素因数の和:419

約数の個数: 64

約数和(自身を含む): 43776000

約数和(自身を除く): 22326495

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 49, 55, 77, 105, 147, 165, 231, 245, 343, 379, 385, 539, 735, 1029, 1137, 1155, 1617, 1715, 1895, 2653, 2695, 3773, 4169, 5145, 5685, 7959, 8085, 11319, 12507, 13265, 18571, 18865, 20845, 29183, 39795, 55713, 56595, 62535, 87549, 92855, 129997, 145915, 204281, 278565, 389991, 437745, 612843, 649985, 1021405, 1429967, 1949955, 3064215, 4289901, 7149835, 21449505]

約数ペア:

[(1, 21449505), (3, 7149835), (5, 4289901), (7, 3064215), (11, 1949955), (15, 1429967), (21, 1021405), (33, 649985), (35, 612843), (49, 437745), (55, 389991), (77, 278565), (105, 204281), (147, 145915), (165, 129997), (231, 92855), (245, 87549), (343, 62535), (379, 56595), (385, 55713), (539, 39795), (735, 29183), (1029, 20845), (1137, 18865), (1155, 18571), (1617, 13265), (1715, 12507), (1895, 11319), (2653, 8085), (2695, 7959), (3773, 5685), (4169, 5145)]