21725865

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{59}}^1\times {\mathrm{167}}^1$

素因数の和:251

約数の個数: 72

約数和(自身を含む): 44815680

約数和(自身を除く): 23089815

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 49, 59, 63, 105, 147, 167, 177, 245, 295, 315, 413, 441, 501, 531, 735, 835, 885, 1169, 1239, 1503, 2065, 2205, 2505, 2655, 2891, 3507, 3717, 5845, 6195, 7515, 8183, 8673, 9853, 10521, 14455, 17535, 18585, 24549, 26019, 29559, 40915, 43365, 49265, 52605, 68971, 73647, 88677, 122745, 130095, 147795, 206913, 344855, 368235, 443385, 482797, 620739, 1034565, 1448391, 2413985, 3103695, 4345173, 7241955, 21725865]

約数ペア:

[(1, 21725865), (3, 7241955), (5, 4345173), (7, 3103695), (9, 2413985), (15, 1448391), (21, 1034565), (35, 620739), (45, 482797), (49, 443385), (59, 368235), (63, 344855), (105, 206913), (147, 147795), (167, 130095), (177, 122745), (245, 88677), (295, 73647), (315, 68971), (413, 52605), (441, 49265), (501, 43365), (531, 40915), (735, 29559), (835, 26019), (885, 24549), (1169, 18585), (1239, 17535), (1503, 14455), (2065, 10521), (2205, 9853), (2505, 8673), (2655, 8183), (2891, 7515), (3507, 6195), (3717, 5845)]