20115165

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{191}}^1$

素因数の和:282

約数の個数: 64

約数和(自身を含む): 39813120

約数和(自身を除く): 19697955

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 51, 59, 85, 105, 119, 177, 191, 255, 295, 357, 413, 573, 595, 885, 955, 1003, 1239, 1337, 1785, 2065, 2865, 3009, 3247, 4011, 5015, 6195, 6685, 7021, 9741, 11269, 15045, 16235, 20055, 21063, 22729, 33807, 35105, 48705, 56345, 68187, 78883, 105315, 113645, 169035, 191573, 236649, 340935, 394415, 574719, 957865, 1183245, 1341011, 2873595, 4023033, 6705055, 20115165]

約数ペア:

[(1, 20115165), (3, 6705055), (5, 4023033), (7, 2873595), (15, 1341011), (17, 1183245), (21, 957865), (35, 574719), (51, 394415), (59, 340935), (85, 236649), (105, 191573), (119, 169035), (177, 113645), (191, 105315), (255, 78883), (295, 68187), (357, 56345), (413, 48705), (573, 35105), (595, 33807), (885, 22729), (955, 21063), (1003, 20055), (1239, 16235), (1337, 15045), (1785, 11269), (2065, 9741), (2865, 7021), (3009, 6685), (3247, 6195), (4011, 5015)]