21552825

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{673}}^1$

素因数の和:754

約数の個数: 48

約数和(自身を含む): 41453696

約数和(自身を除く): 19900871

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 61, 75, 105, 175, 183, 305, 427, 525, 673, 915, 1281, 1525, 2019, 2135, 3365, 4575, 4711, 6405, 10095, 10675, 14133, 16825, 23555, 32025, 41053, 50475, 70665, 117775, 123159, 205265, 287371, 353325, 615795, 862113, 1026325, 1436855, 3078975, 4310565, 7184275, 21552825]

約数ペア:

[(1, 21552825), (3, 7184275), (5, 4310565), (7, 3078975), (15, 1436855), (21, 1026325), (25, 862113), (35, 615795), (61, 353325), (75, 287371), (105, 205265), (175, 123159), (183, 117775), (305, 70665), (427, 50475), (525, 41053), (673, 32025), (915, 23555), (1281, 16825), (1525, 14133), (2019, 10675), (2135, 10095), (3365, 6405), (4575, 4711)]