20957685

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{199}}^1$

素因数の和:290

約数の個数: 64

約数和(自身を含む): 41472000

約数和(自身を除く): 20514315

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 51, 59, 85, 105, 119, 177, 199, 255, 295, 357, 413, 595, 597, 885, 995, 1003, 1239, 1393, 1785, 2065, 2985, 3009, 3383, 4179, 5015, 6195, 6965, 7021, 10149, 11741, 15045, 16915, 20895, 21063, 23681, 35105, 35223, 50745, 58705, 71043, 82187, 105315, 118405, 176115, 199597, 246561, 355215, 410935, 598791, 997985, 1232805, 1397179, 2993955, 4191537, 6985895, 20957685]

約数ペア:

[(1, 20957685), (3, 6985895), (5, 4191537), (7, 2993955), (15, 1397179), (17, 1232805), (21, 997985), (35, 598791), (51, 410935), (59, 355215), (85, 246561), (105, 199597), (119, 176115), (177, 118405), (199, 105315), (255, 82187), (295, 71043), (357, 58705), (413, 50745), (595, 35223), (597, 35105), (885, 23681), (995, 21063), (1003, 20895), (1239, 16915), (1393, 15045), (1785, 11741), (2065, 10149), (2985, 7021), (3009, 6965), (3383, 6195), (4179, 5015)]