21668115

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{199}}^1$

素因数の和:292

約数の個数: 64

約数和(自身を含む): 42854400

約数和(自身を除く): 21186285

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 51, 61, 85, 105, 119, 183, 199, 255, 305, 357, 427, 595, 597, 915, 995, 1037, 1281, 1393, 1785, 2135, 2985, 3111, 3383, 4179, 5185, 6405, 6965, 7259, 10149, 12139, 15555, 16915, 20895, 21777, 23681, 36295, 36417, 50745, 60695, 71043, 84973, 108885, 118405, 182085, 206363, 254919, 355215, 424865, 619089, 1031815, 1274595, 1444541, 3095445, 4333623, 7222705, 21668115]

約数ペア:

[(1, 21668115), (3, 7222705), (5, 4333623), (7, 3095445), (15, 1444541), (17, 1274595), (21, 1031815), (35, 619089), (51, 424865), (61, 355215), (85, 254919), (105, 206363), (119, 182085), (183, 118405), (199, 108885), (255, 84973), (305, 71043), (357, 60695), (427, 50745), (595, 36417), (597, 36295), (915, 23681), (995, 21777), (1037, 20895), (1281, 16915), (1393, 15555), (1785, 12139), (2135, 10149), (2985, 7259), (3111, 6965), (3383, 6405), (4179, 5185)]